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The giant barrel sponge has been called the "redwood of the reef" [4] because of its large size and its long lifespan, which can be more than 2,000 years. [5] It is, perhaps, the best-studied species of sponge in the sea; a population on Conch Reef , in the Florida Keys , has been monitored and studied since 1997.
Sea sponge aquaculture is the process of farming sea sponges under controlled conditions. It has been conducted in the world's oceans for centuries using a number of aquaculture techniques. There are many factors such as light, salinity , pH , dissolved oxygen and the accumulation of waste products that influence the growth rate of sponges.
The expedition collected a variety of deep-sea organisms, including the "Eltanin Antenna", an unusual structure that was later confirmed to be an individual of the C. concrescens species. Today, the ping pong tree sponge remains an important subject of study for marine biologists, who continue to explore the mysteries of the deep-sea ecosystem.
Chondrocladia lyra, also known as the lyre sponge or harp sponge, is a species of carnivorous deep-sea sponge first discovered off the Californian coast living at depths of 10,800–11,500 feet (3,300–3,500 m) by Welton L. Lee, Henry M Reiswig, William C. Austin, and Lonny Lundsten from the Monterey Bay Aquarium Research Institute (MBARI).
Sometimes the sponge is encrusting, forming a shallow layer of tissue growing across the substrate. In other locations it grows as several concentric mounds with smaller cloacal openings or as large vase-type structures, single or in groups, sometimes fused together laterally. The general colour is deep brown or dark red.
The relatively large encrusting sponge Lissodendoryx colombiensis is most common on rocky surfaces, but has extended its range into seagrass meadows by letting itself be surrounded or overgrown by seagrass sponges, which are distasteful to the local starfish and therefore protect Lissodendoryx against them; in return, the seagrass sponges get ...
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