Yellow-spotted Guard Crab (Trapezia flavopunctata) アラメサンゴガニ
The spots on the Yellow-spotted Guard Crab look white to me. It could just be the light. They are common in coral heads. It is hard to get a clear shot of them. Kauai 2019
Yellow-spotted Guard Crab. Kauai 2019
Yellow-spotted Guard Crab. Kauai 2013