isopods!

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Across
  1. 2. they have four sets of these to grind food
  2. 5. also called
  3. 8. environment that they thrive in
  4. 10. how many legs they have
  5. 11. maximum average lifespan]
Down
  1. 1. how they communicate
  2. 3. they have two pairs of these for feeling and smelling
  3. 4. they are compound instead of a single lens
  4. 6. their gills are located here so they can breathe
  5. 7. group they belong to (only one on land)
  6. 9. something they don't do that releases liquid