Penna di mare Sea pen Pennatula phosphorea www.intotheblue.it -2023-02-06-14h27m39s312
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Sea pen Pennatula phosphorea

Sea pens are colonial marine cnidarians belonging to the order Pennatulacea. There are 14 families within the order and 35 extant genera; it is estimated that of 450 described species, around 200 are valid. Sea pens have a cosmopolitan distribution, being found in tropical and temperate waters worldwide, as well as from the intertidal to depths of more than 6100 m.Sea pens are grouped with the octocorals, together with sea whips (gorgonians).