This printable crossword puzzle on the topic of Oceans & Water has 12 clues. Answers range from 5 to 14 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
group of primitive, non-flowering plants which include certain seaweeds and microscopic phytoplankton
fish such as American shad that migrate from their primary habitat in the ocean to freshwater to spawn
Not containing oxygen or not requiring oxygen
a condition where no oxygen is present
a mixture of fresh and salt water
minute shrimp-like crustaceans; often they are most common zooplankton in estuarine waters
organisms (chiefly bacteria and fungi) that break down dead organic matter
an interactive system of a biological community and its non-living environment
the place where a plant or animal lives
low, wet grassland without trees, periodically covered by water
periodic movement (raising and lowering) of a body of water by the gravitational attraction of the moon and sun with the rotation of the earth
an area of land that is drained by a river or other body of water