Cliona caribbaea

Cliona caribbaea is a sponge belonging to the family Clionaidae, found primarily in the Western Central Atlantic region. This species is typically associated with reef environments and can be found at depths ranging from 1 to 70 meters, although most occurrences are recorded at depths shallower than 40 meters. It is known for its thin encrusting form, with a maximum thickness of just 0.2 cm, and it often covers the substrate continuously. The sponge is brown to gray in color, with oscula that have a cream-colored rim, measuring between 0.2 to 0.3 cm wide. Small specimens may display distinguishable papillae, particularly around the rims. Cliona caribbaea can also be found in mangrove ponds and occasionally in shallow rubble areas, although it is mostly encountered at depths greater than 6 meters. The life cycle of Cliona caribbaea involves a free-swimming parenchymella larva stage, which eventually settles on a substrate to develop into a young sponge. As members of the class Demospongiae, these sponges are hermaphroditic. For divers encountering Cliona caribbaea, it presents a unique sight with its encrusting appearance and subtle coloration. Although it is not evaluated by the IUCN Red List, it is recorded at numerous dive sites. Divers might find this species in various reef-associated environments, making it a noteworthy subject for underwater exploration.