What a wonderful sea

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Across
  1. 4. Strong pull of water
  2. 5. Bird lives on the ocean
  3. 8. Lots of fish altogether
  4. 10. deep water fish known for its bioluminescence bulb (2 words)
  5. 13. You lay out on a beach _____
Down
  1. 1. ____'s up!
  2. 2. Killer whale
  3. 3. Tasty shellfish common in Maine
  4. 6. Filter feeding whales have ______
  5. 7. Sushi is ___ fish
  6. 9. Has a pair of claws
  7. 11. water craft used in the military
  8. 12. "Unicorn of the sea"