The law of the sea, as established by the United Nations Convention on the Law of the Sea (UNCLOS), represents the most comprehensive international framework governing maritime zones and oceanic rights. This framework is crucial for India, a vast coastal nation with significant maritime interests, and forms part of customary international law that binds even non-signatories through accepted practice. UNCLOS creates a tiered system of maritime jurisdiction that balances coastal state sovereignty with the freedom of navigation and resource access enjoyed by the international community. India became a party to UNCLOS in 1995, and the framework now governs India's maritime boundaries, resource extraction rights, and enforcement jurisdiction across different maritime zones. The territorial sea, extending twelve nautical miles from the baseline (usually the low-water mark along the coast), represents the first and innermost zone where a coastal state exercises full sovereignty identical to that over its land territory. Within this zone, a state may enforce all its laws—criminal, civil, and administrative—and exclude foreign vessels and persons entirely, subject only to the narrow right of innocent passage for foreign ships in peacetime. The exclusive economic zone (EEZ), stretching from the territorial sea boundary to two hundred nautical miles from the baseline, operates on a fundamentally different legal principle: the coastal state possesses sovereign rights (not full sovereignty) exclusively for economic purposes—specifically the exploration, exploitation, conservation, and management of natural resources, both living (fisheries) and non-living (mineral deposits, oil, gas). Crucially, within the EEZ, other states retain the freedom of navigation, overflight, and the laying of submarine cables and pipelines, subject to the coastal state's regulatory authority over these activities. The continental shelf—an extension of the state's landmass beneath the sea—is subject to coastal state jurisdiction for resource exploration and exploitation, potentially extending beyond two hundred nautical miles if geological criteria are met. Beyond two hundred nautical miles (or the outer edge of the continental shelf, whichever is greater), the high seas begin, where no state may claim sovereignty, all states possess equal rights to navigate, fish, and conduct scientific research, and an elaborate system of flag state jurisdiction applies based on the nationality of vessels rather than proximity to land. The interaction between these maritime zones creates a cascading jurisdictional architecture. A foreign merchant vessel in the territorial sea is subject to coastal state law but enjoys innocent passage protection—meaning it cannot be stopped or prosecuted for mere transit unless its passage is non-innocent (involving threat, military exercise, pollution, or espionage). A fishing vessel from State B operating in State A's EEZ may be subject to State A's conservation and management measures regarding stock levels, fishing licenses, and reporting requirements, but State B retains the ability to protect its nationals' freedom of navigation. An oil exploration company contracted by State C to drill in State D's continental shelf must comply with State D's environmental and safety regulations over that specific resource, even though State D does not exercise full sovereignty over the water column above. These interactions generate consequential rights and remedies: coastal states may arrest and prosecute foreign vessels for violations within territorial seas; may levy administrative fines and impose conservation measures within the EEZ; and must provide due process and fair treatment to foreign nationals. The high seas system permits hot pursuit (a state may pursue a foreign vessel that violates its laws if pursuit begins within territorial sea or EEZ and is continuous), but this remedy is limited and subject to strict conditions. Defences available to states include claims of innocent passage (for territorial sea violations), necessity or force majeure, and the principle that conservation measures must be applied without discrimination. Within India's legal framework, UNCLOS principles have been domesticated through the Maritime Zones Act, which declares the territorial sea as part of Indian territory and the EEZ as a zone of Indian jurisdiction. The Indian Penal Code, 1860, is extraterritorially extended to apply within Indian maritime zones, and Indian courts exercise jurisdiction over offences committed on Indian vessels on the high seas. The Merchant Shipping Act, 1958, as amended, incorporates UNCLOS norms regarding maritime safety, pollution prevention, and the rights of coastal and flag states. India's position within international maritime law emphasizes the balance between coastal state rights (particularly regarding fishery management and resource conservation) and the principle of open navigation. Neighbouring concepts include the distinction between archipelago states (which may claim archipelagic waters as internal) and continental shelf rights beyond the EEZ—both of which operate within the UNCLOS framework but with specialized rules. The law of the sea intersects with environmental law (particularly in controlling marine pollution), with admiralty law (governing maritime contracts and liability), and with the law of treaties (since UNCLOS itself is a treaty binding signatory states). CLAT examiners frequently distort this principle in several predictable ways. A common trap presents a scenario where a coastal state exercises jurisdiction within its EEZ as though it possessed full sovereignty equivalent to territorial sea authority—examiners may ask whether a state may criminally prosecute a foreign national for general theft aboard a foreign vessel in the EEZ, when in fact EEZ jurisdiction is limited to economic and environmental matters unless the flag state consents or the conduct threatens coastal security. Another distortion reverses the baseline: examiners may describe a zone extending "ten nautical miles" and ask about rights, expecting you to confuse this with the territorial sea or to assume it carries EEZ-like economic rights. A subtler trap involves continental shelf ambiguity—presenting facts where a state claims jurisdiction "over its continental shelf" without clarifying whether the claim is within or beyond two hundred nautical miles, creating confusion about whether extended continental shelf procedures (involving submission to a UN commission) are relevant. Examiners often conflate innocent passage with freedom of navigation; innocent passage applies only to territorial seas and only to ships (not aircraft), while freedom of navigation extends throughout the EEZ and high seas for all lawful uses. A scope-creep trap imports principles from land-based border law into maritime contexts—for instance, asking whether a state may build a wall or boundary marker in maritime zones, conflating terrestrial sovereignty concepts with the functional, zone-based maritime system. Another common confusion involves flag state jurisdiction on the high seas versus coastal state jurisdiction in the EEZ; examiners present scenarios where a vessel commits a crime on the high seas and test whether you incorrectly apply coastal state authority. Finally, examiners may present resource extraction scenarios (fishing, mining) within the EEZ and omit mention of environmental impact assessments or conservation standards, testing whether you recognize that EEZ sovereignty rights are constrained by international environmental obligations and non-discrimination principles.