At the beach!

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Across
  1. 2. A small vessel for traveling on water
  2. 4. Sea creature with lots of sharp teeth
  3. 5. To move through the water by moving your body
  4. 6. Tiny grains found on the beach
Down
  1. 1. Water moving towards the shore
  2. 2. A container used for carrying sand or water
  3. 3. A creature that lives in the ocean and has fins
  4. 4. The start that gives us light and warmth