Identifying Sponges

Key to California Porifera (Page 173)

( From page 161 B) NO Arcuate Isochelae present.
[A] GO TO PAGE 174
Anchorate Isochelae present; may have Unguiferous Isochelae as well.
NO Amphiasters present
NO Anchorate Isochelae present.
Amphiasters present.
Acanthancora cyanocrypta (de Laubenfels, 1930)
Sponge: Encrusting to 4 mm thick. Surface: superficially velvety. Oscula: not evident.
Color: Alive: Deep cobalt blue, light orange.
Spicules: Megascleres: (1)Acanthostyles: 75 -145- 280 um. x 8.0 - 8.5 um. (2)Tornotes (very thin): 113 -125-129- 170 um. x 3.2 um. Microscleres: (1)Amphiaster: 10 -13-17- 17 um.
Skeleton: Ectosome: Fleshy dermal membrane 7.0 μm thick. Few spicules. Choanosome: Acanthostyles with heads embedded in basal layer of spongin. Above are scattered Acanthostyles. Above this layer is an area with few Acanthostyles and Tornotes in bundles or scattered. Throughout are abundant blue spiral microbes. Amphiasters throughout sponge.
Distribution: Southern to Northern California.
Depth: Intertidal to subtidal.
Note: Was Hymenamphiaster cyanocrypta.
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