Placospongia intermedia

Placospongia intermedia is a sponge that forms thick crusts to branching structures. Its external coloration ranges from brown to tan, while the interior is lighter. The surface of this sponge is distinctively armored with cortical plates and features a pattern of grooves associated with its inhalant surface, giving it a hard and tough texture. It can be found in the Western Central Atlantic, specifically in regions such as Jamaica, Belize, Colombia, and Panama. It inhabits shallow reef and seagrass beds, mangrove ponds, and is typically found on rocky and rubble substrates. This species is sessile, meaning it remains fixed in one place, and is considered rare in its natural habitats. Members of its class, Demospongiae, are hermaphroditic, and their life cycle includes a free-swimming parenchymella larva stage before settling down to grow into a mature sponge. Despite its rarity, Placospongia intermedia poses no threat to humans and has not been evaluated for conservation status by the IUCN. Divers encountering this species may notice its unique armored surface and branching form, which can make it stand out against the rocky and rubble substrates it prefers.