Aquatics

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Across
  1. 2. Whale, largest animal to ever live on Earth.
  2. 3. big fish with sharp teeth, swims around looking for food.
  3. 5. a big squid that took ships into the sea.
Down
  1. 1. Silvery fish known for swimming upstream to spawn.
  2. 4. Aquatic organisms that include seaweed and pond.
  3. 6. Slithery, snake-like marine fish frequently found in puzzles.