Aquatic animals

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Across
  1. 3. crustaceans stick to
  2. 4. lay eggs on beach
  3. 5. killer whale
  4. 8. cranaries of ocean
Down
  1. 1. most venomous fish
  2. 2. regenerate its arms
  3. 3. biggest animal
  4. 5. Squidward in SpongeBob
  5. 6. heart in the head
  6. 7. produces Electricity