Species Overview

Craniella arb (de Laubenfels, 1930).

SPONGE:

Shape: Subspherical
Consistency: firm; cartilaginous
Color_Alive: Pale tan when young;grey with buff when large

HABITAT:

Benthic Region: Marine: Intertidal; Subtidal; Deep water
Distribution: Southern California to Northern California
Specific Habitat: Intertidally usually on undersides of overhanging rocks.

Skeleton:

Composition: Silicate
Architecture: Among the radiating spicule bundles are tracts of Anatriaenes. Young specimens usually without a well-developed basal mat of spicules while large specimens may have such a mat.

Surface:

Texture: superficially hirsute

Oscula:

Diameter: --3 mm
Rims: surrounded by a thick palisade of packed spicules.

Megasclere:

Shape: Oxeas

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