Cloud sponges (Aphrocallistes vastus) are a prehistoric sponge typically found only in deep cold seas. Their unique and fragile skeletal formation makes cloud sponges extremely sensitive to the slightest touch, sedimentation, and to physical disturbances from bottom trawling fishing activity. They are sometimes called “glass” sponges because their structure is made up of very sharp fused spicules of silica. Cloud sponge are found in the northern Pacific Ocean and their range includes Japan, Siberia, the Aleutian Islands and the west coast of North America from Alaska southwards to California and Mexico. It is a reef-building species found in deeper waters on the western Canadian shelf growing on sediment-free rocks. They grow in fiords off the coast of British Columbia, Canada, beginning at depths of 25 metres (82 feet), or more.
Jett & Kathryn Britnell
Jett & Kathryn Britnell are professional Underwater, Wildlife & Expedition Photographers, Explorers, internationally published Scuba / Adventure Travel Writers and Speakers. Both are Fellows in the world renowned and exclusive Explorers Club in New York, Fellows in the prestigious Royal Canadian Geographical Society in Ottawa, Fellows in the famed Royal Geographical Society in London and members in The League of Underwater Explorers. Jett is a member of the highly esteemed Ocean Artists Society, a unique alliance of the world’s top marine life artists, painters, sculptors, photographers, filmmakers, and writers, one of approximately 50 of the World's top underwater photographers who have donated imagery to support The Ocean Agency's conservation initiatives, and is a consultant to Elephanatics, an elephant advocacy organization based in Vancouver, British Columbia, Canada.