Pulsanting Xenid - Heteroxenia fuscescens
The pulsating xenid (Heteroxenia fuscescens) is a species of soft coral in the family Xeniidae. The polyps of Heteroxenia fuscescens grow to form large clumping colonies up to 60 centimetres (24 in) across. Its polyp stalks are approximately 5 centimetres (2.0 in) long, each stalk ending in a ring of large feathery pinnate tentacles, eight per polyp, as is typical of octocorals. Polyps pulsate rhythmically around 40 times/ minute, moving their tentacles in a "pumping" or "pulsating" fashion.


