Haplosclerid Sponges (Soft, Encrusting Sponges) [Haplosclerida]

Description

Haplosclerid sponges often appear as soft, encrusting, or branching growths that blend into rocks, wrecks, and coral rubble. Divers may notice their varied textures—some look velvety or cushion-like—while their colors range from muted browns and creams to brighter tones. They filter-feed continuously, so the “stillness” you see is part of their quiet, constant work.

Families

Petrosiidae

Petrosiidae

Callyspongiidae

Callyspongiidae

Taxonomy