The Tree of Life Cladogram
Cnidarians

CHARACTERISTICS: animals without a backbone; have stinging cells in their tentacles, which they use for defense and to capture prey
KNOWN SPECIES: 9,747
SIZE RANGE: Less than .04 inches to over 164 feet (1 miilimeter to over 50 meters)
WHERE THEY LIVE: in oceans; a few in fresh waters

Here are just SOME of the world's cnidarians:
Gorgonian coral
Photos are not actual size! Tube anemone Eggyolk jellyfish
Smooth flower coral California cup coral Swimming anemone
Symmetrical brain coral
Guess What?
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Gorgonian coral Portuguese man-of-war