Across
- 3. Human activity made difficult due to water resistance. (9)
- 7. Sounds underwater often seem _______ or unclear. (7)
- 9. Dolphins and other marine animals adapt to hearing underwater using this. (8)
- 11. Skin reaction after long exposure to water. (8)
Down
- 1. Without this, humans cannot breathe underwater. (3)
- 2. A material used to protect the skin in cold water. (7)
- 4. Equipment used to improve vision underwater. (9)
- 5. How underwater movement compares to air movement due to resistance. (8)
- 6. Technique that helps humans float on water. (8)
- 8. Easier to do in water than in air due to buoyancy. (5)
- 10. Underwater objects appear _______ or larger than they actually are. (6)
- 12. This equipment helps humans breathe underwater. (5)