Pacific Northwest Locals
Egg Yolk Jellyfish
Giant Lion’s Mane Jellyfish
Fish Eating Anemone
White Spotted Rose
The Hydra is a freshwater cnidarian
What kind of symmetry does hydra have?
Is it a medusa or a polyp?
• Predatory animals
• They can be found in most unpolluted fresh-
water ponds, lakes, and streams in the temperate
and tropical regions and can be found by gently
sweeping a collecting net through weedy areas.
• Hydras are generally sedentary or sessile, but do
occasionally move quite readily, especially
Sponge Images and Videos -
Cnidarian Images and Videos -
General Invertebrate Movies at National Geographic
--- really good video on the portuguese man of war (under
Hydra Video at http://www.schooltube.com/video/55045/Hydra