Across
- 2. Name of the First military submarine
- 3. traditional way of swimming without equipment
- 5. Presley Person who lived the longest underwater
- 7. The challenger Deep is located near here.
- 9. hard protective outer case of a mollusk or crustacean
- 10. a hard hat that covers and protects the whole head
Down
- 1. a room or space used for a particular purpose
- 4. swim deep into the sea
- 6. a group of people who live together
- 8. the strength of one thing pushing against another thing
- 9. thick strong rope or wire