| Hydra
The Hydra is a small, freshwater jellyfish.
What they look like:
Hydras have small, cylindrical, soft bodies with tentacles
around the mouth at one end. At the other end, they
have a disk, which they use to affix themselves to a solid
surface such as a rock or plant.
Size:
up to 25 mm long.
Where they live:
Hydras occur in ponds, streams and small lakes. They
are found in groups, attached to stones and plant matter.
What they eat:
The Hydra eats small animals that may happen to touch its tentacles.
It uses stinging cells in its tentacles to stun its
prey, and then pulls it into its mouth.
Pollution
tolerance. Very tolerant, rating 1.
Hydras can live in streams with organic pollution
as they can survive in a low oxygen environment.
They feed off the algae and bacteria that grow in
these environments. |
What’s interesting about
the Hydra? |
