Eyespot Costasiella

An Eyespot Costasiella (Costasiella ocellifera) moving around on his Paddle Blade Alga. You can see his little heart beating (just behind the blue spot).
Costasiellas are sap-sucking slugs that feed by kleptoplasy, stealing the chloroplasts from their host algae and keeping them alive and photosynthesizing inside their bodies for energy.

Видео Eyespot Costasiella канала Caribbean Reef Life