Brown hydra  (Hydra oligactis)

Learn about the scientific name of this species and how it fits into the tree of life at Nature Navigator.

Description

Hydras are freshwater animals that belong to the same group as jellyfish, corals and sea anemones (2). The sac-shaped 'body' is topped with a mouth surrounded by a crown of tentacles that feature stinging cells used to stun prey (2).

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