Prior to being imaged during a Deep-Sea Symphony: Exploring the Musicians Seamounts expedition dive to explore Schumann Seamount, this giant species of sponge had only ever been seen twice, both times in the Northwestern Hawaiian Islands. To see it in the Musicians Seamounts indicates a connection between the two regions. This particular sponge measured over 4 meters (12 feet) long.
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Video courtesy of NOAA Ocean Exploration, Deep-Sea Symphony: Exploring the Musicians Seamounts.