marine science crossword puzzle

This printable crossword puzzle on the topic of Marine Life has 11 clues. Answers range from 6 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

a principal taxonomic category that ranks above class and below kingdom
plankton consisting of microscopic plants.
(of an organism or part) having or consisting of many cells
the flora and fauna found on the bottom, or in the bottom sediments, of a sea, lake, or other body of water
an organism that maintains its body temperature at a constant level, usually above that of the environment, by its metabolic activity
an animal that is dependent on external sources of body heat.
an animal lacking a backbone
plankton consisting of small animals and the immature stages of larger animals
chiefly of fish) living close to the floor of the sea or a lake
an organism that cannot regulate its body temperature except by behavioral means such as basking or burrowing
(of an organism, e.g. a barnacle) fixed in one place; immobile.