A guide to the deep-water sponges of - NMFS Scientific Publications ...

72 Professional Paper NMFS 12
56. Lissodendoryx (Ectyodoryx) olgae (Hentschel, 1929)
Description. This sponge is massively encrusting.
Oscula are in small depressions; surface is corrugated.
Consistency is soft and very fragile. Diameter is to 15 cm.
Color in life is brown to golden brown.
Skeletal structure. There are tangentially arranged
ectosomal tylotes (240–290 × 4–8 µm), often strongylote.
Choanosomal acanthostyles are in two size categories
– large (235–310 × 12–18 µm), and smaller echinating
acanthostyles (120–160 × 6–8 µm). There are large
arcuate chelae (48–52 µm), small isochelae (15–20 µm),
and sigmas (48–62 µm).
Zoogeographic distribution. Uncommon. In Alaska
– central Aleutian Islands. Elsewhere – Arctic Ocean
(western Barents Sea) and North Atlantic Ocean (near
Norway).
Habitat. In Alaska – attached to small cobbles and
pebbles in generally low-relief (i.e., flat-bottomed) habitat
and at depths between 150 and 160 m. Elsewhere –
reported at depths between 130 and 210 m.
Photo. 1) Specimen collected at a depth of 155 m in
the central Aleutian Islands growing with the gorgonian
Plumarella sp. Grid marks are 1 cm 2 .