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Thorunna daniellae (Kay & Young, 1969)
 
Thorunna daniellae: aggregation
 
aggregation on food sponge

Thorunna daniellae: sponge detail
 
sponge detail
shows an aggregation on its food sponge that is largely concealed by algal turf (or has been "nibbled" down to that level?); 2nd photo is a composite showing the sponge under the aggregation on right and another patch of the same sponge from elsewhere in the original on left; also shows variation in color of submarginal line

Photos:
  John Hoover: Lehua Islet, Niihau; July 11, 2011.

Thorunna daniellae: animal feeding on greenish-gray sponge
 
animal feeding on greenish-gray sponge

Thorunna daniellae: animal feeding on greenish-gray sponge, detail

 
detail
shows an animal on a greenish-gray sponge with probable feeding damage (most likely the same species but without encrusting algal turf)

Photos:
  Todd Hackett: Kohala, Big Island; June 13, 2020.
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