Geography · 9th Grade · Political Geography and Conflict · Weeks 19-27

Geopolitics of the Ocean

Understanding the Law of the Sea (UNCLOS) and territorial disputes in international waters.

• Common Core State Standards
• C3: D2.Geo.5.9-12
• C3: D2.Civ.10.9-12

About This Topic

The world's oceans cover more than 70% of Earth's surface and contain enormous quantities of fish, oil, gas, and rare minerals. The United Nations Convention on the Law of the Sea (UNCLOS), adopted in 1982, created the legal framework governing access to these resources, establishing 12-mile territorial waters, Exclusive Economic Zones (EEZs) extending 200 nautical miles from coastlines, and rules for the international seabed beyond. For US students, UNCLOS is particularly interesting because the United States has signed but never ratified the treaty, creating a distinctive foreign policy tension that cuts across military, commercial, and sovereignty interests.

Maritime disputes test the limits of this framework. In the South China Sea, overlapping EEZ claims among China, Vietnam, the Philippines, Malaysia, Brunei, and Taiwan have produced militarized island-building and legal challenges at the International Court of Arbitration. In the Arctic, melting sea ice is revealing undersea resources and new shipping lanes, prompting competing claims from Russia, Canada, Denmark, Norway, and the US that UNCLOS alone may not resolve.

Active learning works especially well here because students can role-play negotiating overlapping EEZ claims using real maps and primary documents, making the abstract legal concepts concrete and revealing how geography directly shapes national interests.

Key Questions

1. Evaluate who owns the resources at the bottom of the Arctic Ocean.
2. Analyze why the South China Sea is a major flashpoint for global conflict.
3. Explain how Exclusive Economic Zones (EEZs) impact global fishing rights and resource extraction.

Learning Objectives

• Analyze the legal basis for Exclusive Economic Zones (EEZs) and their impact on resource claims in international waters.
• Compare and contrast the geopolitical challenges in the Arctic and South China Sea related to maritime disputes.
• Evaluate the significance of the United States' non-ratification of UNCLOS on its maritime policy and international relations.
• Explain how UNCLOS provisions define territorial waters, EEZs, and the high seas.
• Critique the effectiveness of UNCLOS in resolving contemporary territorial and resource disputes.

Before You Start

Introduction to International Relations

Why: Students need foundational knowledge of state sovereignty, international law, and diplomatic relations to understand the geopolitical context of maritime disputes.

Map Skills and Spatial Reasoning

Why: Understanding maritime zones and territorial claims requires the ability to interpret maps, measure distances, and visualize geographic relationships.

Basic Principles of Resource Management

Why: Students should have a general understanding of how natural resources are managed and the potential for conflict over scarce resources.

Key Vocabulary

United Nations Convention on the Law of the Sea (UNCLOS)	An international treaty that establishes a legal framework for all marine and maritime activities, defining maritime zones and rights.
Exclusive Economic Zone (EEZ)	A maritime zone extending 200 nautical miles from the coast, within which a coastal state has sovereign rights for exploring and exploiting marine resources.
Territorial Sea	A belt of coastal waters extending at most 12 nautical miles from the baseline of the territory of a state, over which the state has sovereignty.
High Seas	All parts of the sea that are not included in the EEZ, territorial sea, or internal waters of a state, open to all states.
Maritime Dispute	A disagreement between states over the boundaries of maritime zones or the rights to resources within those zones.

Watch Out for These Misconceptions

Common Misconception

The ocean is international territory where no country has jurisdiction.

What to Teach Instead

Under UNCLOS, coastal states have full sovereignty over 12-mile territorial waters and sovereign rights over resources in their 200-mile EEZ. Only the high seas beyond these zones are truly international. Students typically clarify this distinction when they map real EEZ boundaries and discover how much ocean is already claimed.

Common Misconception

Maritime disputes are just about fishing rights.

What to Teach Instead

EEZs cover oil, gas, rare earth minerals on the seafloor, and even wind and tidal energy potential, often worth trillions of dollars. When students calculate the economic value of a contested EEZ, they understand why nations go to such lengths to defend these claims through legal and military means.

Common Misconception

UNCLOS resolves all ocean disputes.

What to Teach Instead

UNCLOS creates a framework but cannot force compliance, and major powers including the US have not ratified it. When students examine the South China Sea arbitration ruling that China simply ignored, they see how international law depends on state cooperation to function in practice.

Active Learning Ideas

Simulation Game: EEZ Negotiation

Small groups represent different nations with overlapping EEZ claims in the South China Sea. Each group receives a fact sheet with their nation's position and resources at stake. Groups negotiate bilateral agreements before a full-class multilateral summit, then debrief on which geographic factors shaped each nation's position.

45 min·Small Groups

Map Analysis: Drawing the Invisible Lines

Students receive a blank map of the Arctic Ocean and coast data for the five Arctic states. They draw 12-mile territorial waters, 200-mile EEZs, and the continental shelf extensions each country claims. The resulting overlaps become the basis for a structured discussion about whose claim is strongest under UNCLOS rules.

25 min·Pairs

Gallery Walk: South China Sea Flashpoints

Six stations post different artifacts: satellite images of artificial islands, a timeline of incidents, a UNCLOS excerpt, a Chinese nine-dash line map, a US Navy freedom-of-navigation notice, and a Filipino fisherman's testimony. Students annotate each with observations and questions, then the class synthesizes the competing perspectives.

30 min·Small Groups

Think-Pair-Share: The US and UNCLOS

Students read a two-paragraph briefing on why the US Senate has not ratified UNCLOS despite the Navy supporting it. Pairs identify the competing interests (military, commercial, sovereignty) before sharing with the class, generating discussion about how domestic politics shapes international maritime behavior.

15 min·Pairs

Real-World Connections

• Naval officers in the U.S. Navy must understand UNCLOS to navigate international waters, conduct freedom of navigation operations, and interpret maritime law during patrols in areas like the South China Sea.
• Fisheries managers for organizations like the National Oceanic and Atmospheric Administration (NOAA) use EEZ boundaries to set quotas and manage fishing efforts, directly impacting the livelihoods of fishing communities in coastal states like Alaska and Maine.
• Geoscientists working for energy companies analyze potential oil and gas reserves in areas like the Arctic seabed, where UNCLOS and competing national claims create complex legal and political challenges for exploration.

Assessment Ideas

Exit Ticket

Provide students with a map showing disputed maritime areas (e.g., South China Sea). Ask them to identify one country's claim, explain the legal basis for that claim using UNCLOS concepts (like EEZ), and state one potential consequence of the dispute.

Discussion Prompt

Pose the question: 'Given the geopolitical realities and resource competition, is UNCLOS an effective framework for managing the world's oceans, or does it primarily create new areas for conflict?' Facilitate a debate where students use specific examples from the Arctic and South China Sea.

Quick Check

Present students with scenarios involving resource extraction or naval passage in international waters. Ask them to identify which UNCLOS zone applies (Territorial Sea, EEZ, High Seas) and what rights or restrictions apply to coastal states and other nations in that zone.

Frequently Asked Questions

What is UNCLOS and why does it matter for 9th grade geography?

UNCLOS is the main treaty governing ocean rights. It sets the 12-mile territorial sea limit, the 200-mile EEZ, and rules for the deep seabed. Students study it because it directly controls fishing rights, oil and gas extraction, and military access across 70% of Earth's surface, making it central to understanding modern geopolitical conflict.

Why is the South China Sea a major conflict zone?

Multiple nations claim overlapping Exclusive Economic Zones in the South China Sea, which carries an estimated $5 trillion in annual trade and holds significant oil and gas reserves. China's expansive nine-dash line claim conflicts with UNCLOS rules and the EEZs of Vietnam, the Philippines, Malaysia, and others, creating ongoing military and diplomatic friction.

Who owns the resources at the bottom of the Arctic Ocean?

No single country owns the Arctic Ocean floor. Under UNCLOS, nations can claim an extended continental shelf beyond 200 miles if they prove a geological connection. Russia, Canada, Denmark, Norway, and the US all have overlapping submissions. Until these claims are resolved through international processes, the resources remain legally contested.

How does active learning help students understand ocean geopolitics and maritime law?

Role-playing EEZ negotiations and drawing boundary maps on real ocean charts makes legal concepts tangible. Students who negotiate as a national delegate remember the competing geographic and economic interests far better than students who simply read about them. Simulation also builds the perspective-taking skills central to civic reasoning.