Introduction
The sea has always stimulated the human imaginary. To a land-based species such as humankind, the sea inspires wonder, and its mysteries offer an irresistible call to venture into the unknown. The sea is recalcitrant however. With its unbiddable nature and its being-other, the sea, unlike land, has eluded humankind’s grasp, and has frustrated (Western) law’s urge to superimpose its grid of fixity on its ever-moving waves and waters. Indeed, the sea, it has been noted, is “legally immeasurable, foreign to any legal title.”Footnote 1 The expansion of human activities at sea has thus challenged what Carl Schmitt called “telluric law,” a law of order and orientation, of solid borders and fixed limits, of etched perimeters and enduring delimitations.Footnote 2 Law, inevitably, embodies a human perspective, and the sea remains ultimately alien to the perspective of a telluric being.Footnote 3 This tension is captured by Rachel Carson, famous for her “terrestrial” book Silent Spring, but who also wrote extensively on the sea.Footnote 4 In an essay published in the magazine Atlantic Monthly in 1937 and titled “Undersea,”Footnote 5 Carson simultaneously recognized the limitations of a human perspective and the necessity to embrace plural ways of knowing if we wish to gain at least some understanding of what it means to live in the sea. She observed how we cannot
with our earth-bound senses, know the foam and surge of the tide […] the vicissitudes of life on the ocean floor […] the recesses of the abyss, where reign utter silence and unvarying cold and eternal night.Footnote 6
[…]
To sense [the] world of waters known to the creatures of the sea we must shed our human perceptions of length and breadth and time and place, and enter vicariously into a universe of all-pervading water.Footnote 7
Law, challenged by the sea, had to abandon its telluric orientation at the onset of modernity. The emerging world order was liquid like the sea water, and its operative framework was that of trade, economics, and freedom, on the basis of what Hugo Grotius, who would become the father of the modern law of the sea, considered a rule or first principle of the Law of Nations: “[e]very nation is free to travel to every other nation, and to trade with it.”Footnote 8 Such principle affirmed a self-evident and immutable right to travel and trade—Grotius uses the language and logic of natural law—a right which required, at a minimum, the right of innocent passage over land and sea.
Grotius then further delineated the clear distinction between the traditional order of land and the emerging order of the oceans. Property has its origin in occupancy, wrote Grotius, and the sea could never be occupied or subject to servitude. To describe acts of navigation as occupancy would be absurd since a “ship sailing over the sea no more leaves behind itself a legal right than it leaves a permanent track.”Footnote 9 This argument was put forward by Grotius against the Portuguese claim that “the acts of navigating at an earlier date than other peoples”Footnote 10 would amount to occupancy and hence establish dominium. Grotius instead considered the sea a “res communis omnium.” Not even the Pope, according to this view, could legitimately dispose over areas which, as res communes, are beyond ownership and thus cannot be the object of commercial transactions.Footnote 11
This conceptual and normative basis, which still underpins the law of the sea today, hinges, however—and this is the key point I wish to raise in this exploratory paper—on a reading of the Roman legal category res communes omnium that arguably does not capture all of its normative richness. This partial reading, to be sure, is the result of an unsurprising use, typical of the middle ages and early modernity, of Roman law as a source of legitimation for contingent legal arguments, rather than as an object of scientific historical reconstruction,Footnote 12 and Grotius is no exception in this respect.Footnote 13
The aim of this paper is to re-activate certain layers of normative meaning that have been obscured, forgotten, or rendered inoperative by the predominant traditions that engaged, from Grotius onwards, with the concept of res communes omnium.Footnote 14 The hope and the purpose is that of offering a novel perspective on matters such as the protection and preservation of ocean commons that are of great urgency and importance today. This approach finds inspiration in the “etymological” method utilized by German philosopher Martin Heidegger. While the aim of analysis, suggested Heidegger, is that of “tightening up” or “narrowing” the meaning of a term (what Heidegger calls “stunting the word”), etymology aims at “opening up” the word in order to reveal the richness of its semantic field.Footnote 15 Transposed to the legal terrain, this means opening up the semantic as well as the normative field of legal concepts and categories. Through this methodological perspective, and in line with calls for methodological pluralism in matters of law and the environment,Footnote 16 space may be then (re-)opened for exploring certain elements that could be useful for the articulation of a novel legal imagination for the protection and preservation of ocean commons.
Ocean Commons and the Regime of the High Seas
The expression “ocean commons” refers most immediately to a spatial domainFootnote 17 and, in particular, to marine areas beyond national jurisdiction (ABNJ), whose general legal framework is set out in the United Nations Convention on the Law of the Sea (UNCLOS).Footnote 18 Two maritime zones are located in ABNJ. One is comprised of the “seabed and ocean floor and subsoil thereof, beyond the limits of national jurisdiction,” and is referred to in UNCLOS as the “Area.”Footnote 19 The other one is comprised of “all parts of the sea that are not included in the exclusive economic zone, in the territorial sea or in the internal waters of a State, or in the archipelagic waters of an archipelagic State,” and is referred to in UNCLOS as the “high seas.”Footnote 20 The Area is, in important ways, telluricFootnote 21 and is today subject to the regime of the common heritage of mankind.Footnote 22 As such, it will not be discussed further in this exploratory paper, which will focus on the high seas. The regime of the high seas is set out in Part VII of UNCLOS. Article 87 sets out that the high seas “are open to all States, whether coastal or land-locked” under the principle of the freedom of the high seas, and with the limitations and under the conditions set out by UNCLOS and by other rules of international law.Footnote 23 The list of freedoms contained in article 87 is not exhaustive. The freedom of the high seas is indeed the key principle that, albeit subject to the conditions laid out in UNCLOS,Footnote 24 underlies the very architecture of the law of the sea, as it is also reflected in the right of innocent passage,Footnote 25 right of transit passage,Footnote 26 and in the maintenance of certain high seas freedoms in the exclusive economic zones of coastal States.Footnote 27
Res Communes Omnium
The category that has provided the conceptual and normative basis used by Grotius to articulate the theory of the freedom of the seas, and that still underpins it, is the Roman legal category res communes omnium. The category indicates a set of things—goods—that are common to all, in the sense of not falling under ownership of any individual nor of any particular political community, but also, importantly, of not being susceptible of individual or collective ownership. The argument put forth in this exploratory paper is that this category, deployed by Grotius in order to defend his idea of mare liberum, contains certain elements that, silenced in the prevalent tradition, might be usefully re-activated today.
To re-activate the full normative richness of this category, it is important to start from a key formulation that not only defines it but also puts it within the broader context of the general taxonomy of things in Roman law. The paradigmatic text in this respect places res communes omnium at the top of a taxonomy that included also things that belong to a single political community (res universitatis), to Roman citizens (res publicae), to no one (res nullius), and those that belong to private individuals (res privatae).Footnote 28 As is well known, Res communes omnium were considered the air, flowing waters, and the seas, including its shores.Footnote 29
What is also important—indeed, crucial—to note for our purposes is that the normative underpinning of res communes (that is, the legal basis) was jus naturale.Footnote 30 In order to understand the significance of this fact, we must remember that Roman law recognized three distinct legal orders: jus naturale, which is premised on the notion that certain legal institutions are “inherent in all animal life”Footnote 31 and as such is applicable to all living beings;Footnote 32 jus gentium, which is a legal order based on principles common to all human nations and applicable to humans only;Footnote 33 and finally, jus civile, which is the legal order proprium of Rome and applicable to Roman citizens only.Footnote 34 Moreover, the relations between these three legal orders is regularly considered to reflect a hierarchical relation, with jus naturale at the apex of the normative structure,Footnote 35 being inherently bonun ac aequum (that is, equitable and just).Footnote 36 This expresses what has been described as the “strong sociality” of Roman lawFootnote 37 and is the reverse of what obtains today, where res communes is a residual category.Footnote 38 This “trichotomy,” while challenged by some scholarship as a late interpolation,Footnote 39 remains a solid foundation today for articulating normative arguments.Footnote 40
A few words to describe the Roman idea of jus naturale are in order, given its stark difference with the modern, rationalist notion of natural law.Footnote 41 In the Roman view, jus naturale is the particular legal order that reflects “quod natura omnia animalia docuit,” namely, that which nature teaches to all animals.Footnote 42 Illustrative examples relate to the relational and social inclinations common to humans and animals,Footnote 43 or to the education of the young,Footnote 44 albeit each in its own particular way and according to its particular nature.Footnote 45 Another perhaps more immediately pertinent example is the legal principles that can be derived from the fact of life that all living beings need water to survive, and thus flowing water should remain common and its use available to all living beings. This was achieved precisely through the category of res communes omnium. Observations of natural facts and inclinations also underpin normative principles governing different forms of societas and of cooperative relations between living beings.Footnote 46 Humans and animals are thus encompassed by a commune ius animantium (a legal framework common to all living beings).Footnote 47 It is in this respect important to note that in Roman culture the term ‘animal’ explicitly included in its semantic scope humankind, emphasizing the affinity and the taxonomic contiguity between human and non-human beings.Footnote 48 Furthermore, this commonality under the same legal framework is reflected not only in strong forms of protection for animals that obtained in Roman law—for example, the prohibition of animal sacrificesFootnote 49—but also the cooperative model that frames the relation between human and non-human animals and, more broadly, between man and nature.Footnote 50
Some scholarship has considered this articulation of jus naturale to occupy a merely meta-juridical plane—that is, a moral plane.Footnote 51 This critique rests on the idea that natural legal precepts lack effectivity and are simply reproductions of Greek philosophical ideas. However, the Roman mind was eminently juridical. Indeed, this critique fails to account for the crucial fact that jus naturale, in the Roman legal context, “had little to do with legal philosophy” and was rather “a professional construction of lawyers.”Footnote 52 As Passerin d’Entrèves observed, Roman jurists were trying to “find the rule corresponding to the nature of things, to a concrete situation of fact and life.”Footnote 53 Crucially, jus naturale was a “means of interpretation” and played a key role “in the process of adapting positive law to changing conditions.”Footnote 54 It is on this basis that retrieving this legal tradition, and the normative richness of the category of res communes omnium, may be importantly useful today to help address current circumstances.
Furthermore, and relatedly, the question of effectivity, suggests Roman law scholar Pier Paolo Onida, aims at expunging jus naturale from the realm of the legally relevant utilizing a narrow legal positivist approach. It is rather a question of recognizing a plurality of legal orders; the existence of each does not depend on the effective application of the relevant rules.Footnote 55
Theoretically, jus naturale offers a useful legal pluralist perspective, where different legal orders co-exist regardless of their capacity for effectivity. Methodologically, it can be utilized as an interpretive tool to articulate normative arguments capable of adapting positive law to changing conditions, something which is particularly urgent when confronting current ecological circumstances. Substantively, this perspective importantly recognizes the commonality of the life community in ways that seem to anticipate the idea of the Earth community articulated by scholars affiliated with Earth Jurisprudence.Footnote 56 Additionally, it also recognizes that non-human life is capable of what can be described as culture, and it recognizes the normative significance of non-human culture. In this respect, it resonates with key recent developments recognizing, for example within the context of the Convention on Migratory Species,Footnote 57 how the role and dynamics of culturally transmitted behaviour among cetaceans should be taken into account in relation to any conservation measures taken under that Convention.Footnote 58
Returning to Grotius, it must first be noted that the Dutch lawyer associated the concept of res communes omnium with jus gentium,Footnote 59 in what amounted to a conflation of two legal orders with the consequence of reducing significantly the normative scope of the concept. Grotius thus collapsed the trichotomy of Roman law—jus naturale, jus gentium, jus civile—into a dichotomy where jus naturale and jus gentium become equivalent.Footnote 60 And indeed, his construction, while referring explicitly to jus gentium, articulates a natural law argument insofar as he juxtaposes his argument for open seas to positive human laws. The latter, he argued, could not alter the natural order that made it self-evident that the seas could not be owned and were thus to be considered res communis. A second element to mention is that Grotius’ idea of natural law, and its conflation with jus gentium, decidedly articulated a vision in which the commons is the exclusive domain of humanity.Footnote 61 This view of natural law, which originated with the Stoic school of philosophy and was mediated in Rome especially by Cicero, would also converge into Christian theological jurisprudence. This trajectory, which was fully articulated at the school of Salamanca in ways that cannot be summarized here,Footnote 62 eventually facilitated a crucial transformation of jus naturale from an objective legal order based on the nature of things to a subjective one based on (human) rationality.Footnote 63 Importantly for our purposes, this trajectory of natural law took a forcefully anthropocentric view of the world.Footnote 64 Despite the distinctions that may or may not be made on the basis of Grotius’ famous “impious hypothesis” and of its significance,Footnote 65 this is the tradition of natural law that underpins Grotius’ view (and arguably of all modern natural law theorists). And in this view, the commons are the domain of humans.
This in sharp contrast with the Roman legal tradition of jus naturale that I am retrieving in this article and which considers both humans and animals subject to the precepts of jus naturale, a tradition that also percolated in the legal thinking of some medieval jurists.Footnote 66 The rights of use protected through the category of res communes omnium would, from this perspective, also logically include the use of the sea on the part of non-human beings and so, logically, any obligation of due regard would be applicable in relation to non-human users of the sea. The question is, then: what are the potential implications of this reconstruction and re-activation, if any? Is there any way that this re-activation may provide some basis for the articulation of a legal pluralist approach to international law on the basis of distinct, yet interacting, legal orders? Is there a way to (re-)constitute a “living bond between past and present”Footnote 67 in ways that can be operationalized to address contemporary problems? This, and other related questions, is what we shall explore in the next section.
Law of the Sea, Rights for the Sea?
A first tentative reflection is that the re-activation of what can be described in terms of a dormant potential of the concept of res communes omnium resonates with a growing cultural and normative movement that has begun to question the modern centrality of the human (legal) subject vis-à-vis nature. Under various names—Earth Jurisprudence, Wild Law, Ecological Law, Earth Law or Earth Justice—scholarship aimed at rethinking law in an ecological or ecocentric sense has been gaining momentum in the last few years.Footnote 68 Moreover, courtsFootnote 69 and legislatorsFootnote 70 have also recently recognized the idea that natural entities—such as rivers, mountains, or nature itselfFootnote 71—may or shall be considered as legal subjects and as bearers of autonomous legal rights.Footnote 72 At the international level, under the Harmony with Nature initiative,Footnote 73 there has been a series of “interactive dialogues” between the UN General Assembly and the Harmony with Nature Knowledge Network to promote Earth-centred Law and Governance.Footnote 74 The fact that the concept of res communes omnium includes in its normative scope both the human and non-human world may offer in this respect an important platform for further buttressing reflections on, and articulations of, the existing duties associated with the regime of freedom of the high seas. These in turn may move, in potentially interesting ways, the debate on the scope and content of the obligations laid out in Part XII of UNCLOS, as well as open space for a new conversation within the UN and perhaps even at the margin of the ongoing process towards a new treaty on marine biodiversity in areas beyond national jurisdiction (BBNJ), which was recently “upgraded,” after over a decade of exploratory studyFootnote 75 and preparatory phases,Footnote 76 to the status of intergovernmental conference.Footnote 77 But how can this be achieved? How can this novel reading, this novel space for reflection be brought to bear on the interpretation of existing legal principles and rules, if at all possible? This operation is admittedly ambitious and primarily scholarly and speculative at this point, yet it is well worth, I suggest, engaging with.
A first route to adapt UNCLOS provisions to novel standards would normally be to approach the inclusion of external normative factors into UNCLOS through the referencing method that the Convention utilizes to give concrete substance to many of its otherwise broad-scoped and open-textured provisions. UNCLOS, in fact, refers to international rules, standards, practice, and procedures established by way of diplomatic conferences and/or through the competent international organizations (and especially the International Maritime Organization), which can be of both a hard and soft legal nature.Footnote 78 Scholarly reflections or theoretical constructions, however, do not fall under the scope of the referencing method, so this route is not useful for our purposes.
A second route that can be utilized to adapt and update the content of open-textured legal norms falls under the rules of interpretation set out in article 31(3)(c) of the Vienna Convention on the Law of Treaties and the scope of evolutionary interpretation.Footnote 79 Of course, the challenge for our purposes is that evolutionary interpretation would presuppose the actual establishment of an “ecocentric”Footnote 80 reading of the concept of res communes omnium prior to its use as an interpretative aid. Perhaps a logical argument can be articulated independently, but evolutionary interpretation does necessarily rely on recognized factual or normative developments that at the time of application of a Treaty may have a significant role to play in interpreting the scope and content of relevant rules and principles. In the case under discussion, on the other hand, the relevant stage of articulation is still the construction of a new imagination, and subsequently of a novel argument based on the reconstruction of dormant elements of an otherwise current legal category. It has then a significantly different flavour.
It is also possible to imagine reading the obligation laid out in article 192, particularly in relation to ABNJ,Footnote 81 from the perspective of the ecological integrity of ecosystems, with the view of strengthening its scope and ensuring its effective implementation. This could entail, as Carson suggested, taking the perspective of biodiversity in assessing the duties of States not only towards other States or towards the international community, but also towards biodiversity itself, whose needs may have to be independently taken into account in order to achieve in full the existing goals and obligations of Part XII. If one were to read the obligation that article 192 places on States from this perspective, biodiversity, or a subset thereof, would suddenly occupy an interesting position as the corresponding beneficiary of State obligations of protection and preservation. One might indeed start viewing the sea and marine biodiversity as rights bearers. Of course, there are a number of perhaps intractable complexities related to the idea of recognizing biodiversity, in its plurality and multiplicity, as (a) legal person(s),Footnote 82 with independent legal standing and specific remedies available to it. And this is so even assuming that there may be any traction to the idea of recognizing biodiversity as a rights bearer, which is doubtful at best, at least at this point. However, is not the preambular recognition of the intrinsic value of biodiversity contained in the Convention on Biological Diversity a first, timid, aspirational and yet bold and promising step towards recognizing the independent legal position of biodiversity, equally terrestrial and marine, which is to say, in other words, nature in its manifold biotic and abiotic manifestations? Is not intrinsic value, more than a moral connotation, a functional indication that biodiversity ought to be legally protected according to its own perspective, regardless of how variable, plural, and perhaps even indecipherable this perspective may be? Is not the ecosystem approach, despite its ambiguities and complexities,Footnote 83 a movement in this direction?
In this respect, another useful link may be identified with another significant characteristic of the Roman legal system, namely its functional orientation. The classic Roman tripartite distinction between persons, things, and remediesFootnote 84 is arguably a functional rather than ontological distinction.Footnote 85 This means that there is no sharp ontological juxtaposition between subject and object and that the law protects entities not in light of an objective ontological position or of a fixed positive legal basis (or not only) but based on their need for protection.Footnote 86 Importantly, the same entity found deserving of protection could become legally relevant both as a person or as a thing, depending on the concrete situation and on an assessment of effectiveness.Footnote 87 In line with this Roman legal functionalism, allocating subjective rights to non-human entities may simply serve the functional-pragmatic purpose of attributing strong legal protection to the entity in question without an implicit, unnecessary (and perhaps problematic) attribution of moral subjectivityFootnote 88 and could go a long way to achieve the goals already set out in Part XII of UNCLOS.
Conclusions
This brief exploratory paper has taken a new look at the category of res communes omnium, which forms the basis for the doctrine of freedom of the seas, in order to re-activate one of its important yet forgotten dimensions. The goal was that of tentatively articulating a novel imagination aimed at ensuring the protection and preservation of the marine environment in ABNJ, of which the conservation of marine biodiversity is a crucial element. Revisiting the concept may probably not have immediate or direct effects on either current negotiations, such as the BBNJ process, or on interpretative methodologies that may expand the scope and content of key provisions such as article 192 UNCLOS. However, the primary goal of re-activating or “remembering” the full scope of the concept of res communes omnium may be its effect on the broader discourse of ocean environmental protection. It may, perhaps, help carve novel space for re-imagining the terms of the problems and the array of available solutions that can be entertained and discussed. From the perspective of the potential implications of this broader discourse, it is also easier to imagine resonances and synergies with the emerging articulations of the rights of nature discourse, including, importantly, the existing constitutional, legislative and jurisprudential examples briefly mentioned above, yet on a different conceptual basis that articulates a legal pluralist vision that is utterly juridical and not premised on a subjectivist perspective. Importantly, this re-activation of Roman legal philosophy offers potentially useful theoretical (legal pluralism) and methodological (means of adaptive interpretation) tools, as well as a substantive framework that may facilitate novel, and urgently needed, legal arguments to protect and preserve the marine environment.
However, in a sense, this shift in perspective might be nothing more than an explicit acknowledgement of the positive element of the twofold relation that is otherwise already captured under UNCLOS, though primarily under the negative aspect of duties and obligations. In this respect, it is important to note how it is indeed increasingly recognized that international law, particularly as it relates to the environment, can no longer be considered merely a system of interstate rules.Footnote 89 International law entails today, by contrast, a broader, public law orientation and a broadening set of actors legitimated as both rights and duty bearers.Footnote 90 This novel orientation, that at a minimum sets rules of conduct also vis-à-vis the international community as a whole, may in a future-oriented perspective include in its scope the functional allocation of legal rightsFootnote 91—or better, of legal personhood—to non-human entitiesFootnote 92 so that it will be possible to read the law of the sea also as rights for the sea,Footnote 93 and thus, in turn, achieve perhaps more effectively the goals already set out in the preamble of UNCLOS and in its Part XII, dedicated to the protection and preservation of the marine environment, including through a future implementing agreement on the conservation of marine biodiversity in ABNJ.