sea slug – Everything about underwater and sky

Ceratosoma trilobatum (J. E. Gray, 1827) Nishiki Umiushi

Ceratosoma trilobatum (J. E. Gray, 1827)

This is a very common Nudibranch, but one of my favorite. This guy was hanging on an isolated small rock on the mud bottom. -18m. 26℃.
At Owase, Mie, Japan. The water is hotter comper with the ordinary year. Set, 26, 2019
This nudibranch is called Nisiki Umiushi as the common name in Japan.
Nishiki is a generic term for silk fabrics woven using various colored yarns. So, Nishiki often is used term to refer to vivid and beautiful things.

Goniobranchus tinctorius (Rüppell & Leuckart, 1830)

Sarasa-Umiushi

Red-netted Goniobranch is called “Sarasa Umiushi”. Umiushi meaning Nudibranch or Sea slug in Japanese. This is a common nudi at Owase. It looks like wearing red lace knitting. It may be named after as that looks.
According to Wikipedia, Sarasa is a dyeing and weaving term that refers to a cotton-colored pattern-dyed product of Indian origin and similar pattern-colored dyed products produced in Asia, Europe, etc. under the influence thereof.
-20m