Neopetrolisthes maculatus. These crabs live commensally with sea anemones. Although they have large pincers, they do not use them for feeding. Instead, they have special appendages, shown folded up near the mouth in this frame, that are edged with elongate fine filaments that are so closely spaced that they form a fine sieve. The crabs use these "handnets" to scoop plankton out of the water, which they then clean off the net filaments and consume. The video has sequences showing the crabs using their nets.