Underwater Animals

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Across
  1. 2. It lives underwater and the starting letter is O. It has 3 hearts and 8 tentacles. (7 letters)
  2. 4. It lives underwater and they do not have brain and blood. It starts with the letter s. (8 letters)
  3. 6. They are warmblooded and the starting letter is w. (5 letters)
Down
  1. 1. it is a mammal that lives underwater. The starting letter is D. (7 letters)
  2. 3. It is an animal that lives underwater. The starting letter of this creature is T. They have shells but cannot go inside them. (6 letters)
  3. 5. It lives underwater and are strong swimmers. The starting letter of this creature is s. (5 letters)