Maritime Boundaries & Law of the Sea

Active learning works because maritime boundaries are complex and spatial, needing hands-on mapping and negotiation to grasp layered jurisdictions. Debates and simulations help students internalize how abstract legal concepts like UNCLOS translate into real-world conflicts and cooperation.

• Grade 12
• Geography
• 4 activities
• 40 min–60 min

Learning Objectives

1. Explain the legal basis and geographical extent of Exclusive Economic Zones (EEZs) for coastal states.
2. Analyze specific historical or contemporary maritime boundary disputes and their geopolitical implications.
3. Evaluate the role of the United Nations Convention on the Law of the Sea (UNCLOS) in resolving or escalating international maritime conflicts.
4. Compare and contrast the rights and responsibilities of states within their territorial waters versus international waters.
5. Synthesize information from case studies to propose potential solutions for managing shared marine resources.

Case Study Analysis

⏱ 45 min·Pairs

Map Lab: Delineating EEZs

Provide world maps and rulers marked in nautical miles. Students measure and shade EEZs for select coastal countries, noting overlaps. Discuss resulting disputes in pairs before sharing with the class.

Prepare & details

Explain the concept of an Exclusive Economic Zone (EEZ) and its significance for coastal states.

Facilitation Tip: During the Map Lab, circulate with a red pen to correct EEZ overlaps and ask guiding questions like, 'Which article of UNCLOS applies here?'

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Case Study Analysis

⏱ 50 min·Small Groups

Debate Circle: UNCLOS Effectiveness

Divide class into teams representing coastal states and international bodies. Assign pro and con positions on UNCLOS enforcement. Teams prepare arguments using case studies, then debate in a structured circle format.

Prepare & details

Analyze how disputes over maritime boundaries can lead to international conflict.

Facilitation Tip: In the Debate Circle, assign roles such as 'Coastal State Advocate' or 'Freedom of Navigation Representative' to ensure balanced perspectives.

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Jigsaw

⏱ 60 min·Small Groups

Jigsaw: Maritime Disputes

Assign expert groups one dispute, like Spratly Islands or Arctic routes. Groups analyze causes, UNCLOS application, and outcomes, then jigsaw to teach home groups. Conclude with whole-class synthesis.

Prepare & details

Evaluate the effectiveness of UNCLOS in regulating activities in international waters.

Facilitation Tip: For the Case Study Jigsaw, assign each group a different dispute to deepen analysis, then have them teach their case to peers in mixed groups.

Setup: Flexible seating for regrouping

Materials: Expert group reading packets, Note-taking template, Summary graphic organizer

• Understand
• Analyze
• Evaluate
• Relationship Skills
• Self-Management

Case Study Analysis

⏱ 40 min·Pairs

Negotiation Simulation: Boundary Talks

Pairs represent two nations with overlapping EEZ claims. Using provided data on resources and law, negotiate agreements. Debrief on compromises and UNCLOS principles as a class.

Prepare & details

Explain the concept of an Exclusive Economic Zone (EEZ) and its significance for coastal states.

Facilitation Tip: During the Negotiation Simulation, assign a timekeeper and notetaker to each group to document compromises and sticking points.

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Teaching This Topic

Teachers should start with concrete examples before abstract principles, using real-world disputes like the South China Sea to ground discussions. Avoid lecturing on UNCLOS articles upfront; instead, let students discover rules through activities and then reference treaty texts. Research shows that role-plays and negotiations build empathy and deeper understanding of treaty limitations, especially when students represent countries with conflicting interests.

What to Expect

Successful learning looks like students confidently mapping EEZs, citing UNCLOS articles in debates, analyzing case studies with geographic and legal evidence, and negotiating boundaries with clear justifications. They should connect these activities to broader themes of resource management and international cooperation.

Watch Out for These Misconceptions

Common Misconception

During the Map Lab, watch for students labeling entire EEZ areas as sovereign territory.

What to Teach Instead

Use the EEZ coloring guide to highlight that only the territorial sea (12 nautical miles) grants full sovereignty; the EEZ (200 nautical miles) grants economic rights only. Ask students to label the 'innocent passage' corridor and fishing zones distinctly.

Common Misconception

During the Debate Circle, listen for claims that UNCLOS settles all disputes automatically.

What to Teach Instead

Direct students to UNCLOS Article 298, which allows countries to opt out of dispute resolution. Have them reference the South China Sea tribunal case as an example of ignored rulings to shift the conversation.

Common Misconception

During the Negotiation Simulation, observe students assuming maritime boundaries are fixed once agreed upon.

What to Teach Instead

After each round of negotiations, pause to ask, 'What geographic or political factors might change this boundary in 20 years?' Use the Arctic Ocean ice melt scenario to prompt dynamic thinking.

Assessment Ideas

Discussion Prompt

After the Map Lab, pose the question: 'If a coastal state has sovereign rights to resources in its EEZ, what are its responsibilities towards international shipping and environmental protection within that zone?' Facilitate the discussion, guiding students to cite UNCLOS Articles 56 and 192 as evidence.

Quick Check

During the Case Study Jigsaw, provide students with a map of a fictional coastline and disputed zones. Ask them to identify the territorial sea and EEZ, then label one potential conflict area based on resource distribution or shipping routes on their case study sheets.

Exit Ticket

After the Negotiation Simulation, ask students to write one specific example of a maritime dispute they negotiated and explain how UNCLOS was either used to address it or why it was insufficient. Collect these to assess understanding of treaty limitations and conflict resolution.

Extensions & Scaffolding

• Challenge students to draft a mock UNCLOS treaty clause resolving a fictional dispute, requiring them to cite specific articles.
• Scaffolding: Provide a partially completed map with labeled territorial seas for students to extend into EEZs, using color-coding to highlight zones.
• Deeper exploration: Have students research how climate change affects maritime boundaries, such as rising sea levels altering baselines for territorial seas.

Key Vocabulary

Territorial Sea	A belt of coastal waters extending up to 12 nautical miles from the baseline of a coastal state, over which the state has sovereignty.
Exclusive Economic Zone (EEZ)	An area extending up to 200 nautical miles from the baseline, in which a coastal state has sovereign rights for exploring, exploiting, conserving, and managing natural resources, both living and non-living.
UNCLOS	The United Nations Convention on the Law of the Sea, an international agreement that establishes a legal framework for all marine and maritime activities.
Baseline	The line along the coast chosen as the point from which the extent of territorial seas and other maritime zones is measured.
Innocent Passage	The right of ships of all states to pass through the territorial sea of another state, provided the passage is not prejudicial to the peace, good order, or security of that state.