Across
- 3. Biological sonar used by marine animals like dolphins and bats to navigate and hunt (12 letters)
- 6. Small colourful fish often found in coral reefs, known for their symbiotic relationship with sea anemones (9 letters)
- 9. Process where excessive nutrients in a body of water cause dense plant growth and oxygen depletion (14 letters)
- 12. Mass nesting event of sea turtles, especially the Olive Ridley species (8 letters)
- 13. Describes organisms living in the open ocean, away from the coast or sea floor (7 letters)
- 14. Giant seaweed often forming underwater forests in cold coastal waters (4 letters)
Down
- 1. Also known as the ocean sunfish, this large, disc-shaped fish is known for basking at the surface of tropical and temperate oceans (8 letters)
- 2. Marine crustacean known for inhabiting discarded shells and often seen carrying its home on its back (10 letters)
- 4. This process involves the vertical movement of water, bringing nutrients from the deep ocean to the surface (9 letters)
- 5. Ocean layer where temperature changes rapidly with depth, separating warmer surface water from cooler deep water (11 letters)
- 7. The phenomenon of ocean water rising and falling due to gravitational forces exerted by the moon and sun (5 letters)
- 8. Largest species of sea turtle, known for its long migrations and diet of jellyfish (10 letters)
- 10. Most endangered porpoise native to the northern part of the Gulf of California (7 letters)
- 11. Type of filtering structure found in certain whales, used for feeding on small marine organisms (6 letters)