
Shaun the Sheep Nudibranch
This Nudibranch is very tiny, less than 5mm in size. It is hardly possible to see the details of the eyes and cerata with the naked eyes. It is fondly called Shaun the Sheep as it supposedly looks like a Sheep grazing on grasses.
Here is another picture of 3 together in the same algae :

''Costasiella kuroshimae'' is a species of sacoglossan sea slug, a shell-less marine opisthobranch gastropod mollusk in the family Costasiellidae. It has the ability to incorporate chloroplasts from the algae it feeds on into its body and use them to do photosynthesis.
The type locality is Kuroshima, Taketomi, Okinawa, Ryukyu Islands.
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https://www.jungledragon.com/wildlife/browse/animalia/mollusca/gastropoda/nudibranchia Posted 9 years ago