That is a copepod like a fairy of rabbit.He was cleeping on the arm of a starfish.They are the Parasites those size is only one millimeter.It is spawn sacks looks like a ear.(Kashiwajima-Is/Kohchi、Japan)
ウサギの妖精のように見えるのがコペポーダ。ヒトデの腕の上をはっている。約1ミリの寄生生物で耳のように見える部分は卵嚢。