A new brown morph of the slime star - pterasterid Hymenaster - was observed. This animal was greater than 10 centimeters wide and had a soft, gelatinous surface held up over its proper body surface. These stars can project mucus as a defense when harassed.

A new brown morph of the slime star – pterasterid Hymenaster – was observed. This animal was greater than 10 centimeters wide and had a soft, gelatinous surface held up over its proper body surface. These stars can project mucus as a defense when harassed. Image courtesy of the NOAA Office of Ocean Exploration and Research, 2017 Laulima O Ka Moana.

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