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Loggerhead sponge
Spheciospongia vesparium
(Lamarck, 1814)

Although this species may appear in different habits, the most common form is squatty barrel-shaped, with a flattened top. The central depression has numerous excurrent openings. The surface is undulated, bumpy or broadly rugose, with characteristic fields of pores (S. vesparium-surface). The diameter of a pore is 1-2 mm. These pore fields are commonly somewhat elevated, covering wide, deep vestibules. The consistency is firm, tough and only slightly compressible.

The color is purplish or brownish black, often obscured by adhering sediment.

This species is found in a variety of habitats, including shallow patch reefs and lagoons. In lagoons the species forms a broader base, reaching deep into the sediments.

Common Florida, Bahamas and Caribbean.

Loggerhead sponge (Spheciospongia vesparium)