Phylum: Cnidaria
Class: Hydrozoa
Order: Anthoathecata
Morphology: This hydrozoan forms large colonies of branching tentacles. It typically has a dark main stem with lighter pink or reddish polyps.
Fun Fact: This organism has been used in research into prey-capture mechanisms. They use their nematocysts to stun and temporarily paralyze zooplankton that float by.
Their tentacles then bring their prey to their mouth.