Amphimedon viridis
Duchassaing & Michelotti, 1864
Description:
Rounded masses or repent thick branches, often with volcano-shaped oscular elevations, though the oscules may also be flush. Thickness 2 cm or more; conical elevations 1.5-2 cm high; diameter of repent branches about 2 cm. Oscules 3-8 mm in diameter, with thin edges, which may be raised into a collar. Surface smooth. The consistency is fairly soft and easily to tear.
Color:
Dark greenish.
Habitat:
This species seems to favor lagoons, but is also found in mangroves, seagrass fields and on rocks and in reefs.
Distribution:
Florida, Bahamas and Caribbean.
Remarks:
The related erect rope sponge (Amphimedon compressa ) is pinkish to brownish red and inhabits reef tops and occasionally walls down to 35 meters.