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![What appears to be a large brown sponge with numerous knobs similar to thoseseen on the melon sponges expn4173.jpg What appears to be a large brown sponge with numerous knobs similar to thoseseen on the melon sponges](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_expn4173.jpg?itok=gaAASEsK)
Description
What appears to be a large brown sponge with numerous knobs similar to thoseseen on the melon sponges. A brisingid starfish is seen to the right center.Depth approximately 900 meters. (Image credit: NOAA OKEANOS EXPLORER Program, Oceano Profundo 2015; Exploring Puerto Rico's Seamounts, Trenches, and Troughs)