アメフラシ

'Amefurashi' (Aplysia = a sea hare) on Ohama beach. The reason why it's called 'Amefurashi' (the rainmaker) is that it discharges some reddish-purple fluid in the ocean, spreading out like a rain cloud, to blind the attacker when threatened.

大浜海岸のアメフラシ（ウミウシの一種）。いじめると赤紫色の汁を出しそれが雨雲のように広がるから「雨降らし」。