The 'Not So' Gloomy Nudibranch (Tambja morosa)

  They call this the 'gloomy nudibranch'! Doesn't look so gloomy to me. This hard to find sea slug has the deepest royal blue I have ever seen in an animal. The blue markings are different from slug to slug but the blue vizor over the 'eyes' is a pretty common feature. If you catch it in the right light the dark black features meld into a green tint especially towards the exposed gills.

  You will have to be pretty lucky to find this nudibranch in Hawaii, but you can see different color variations elsewhere in the Indo-Pacific.

  Check out my sea slug gallery at: www.daimarsphotos.com

Trembling Nudibranch

Trembling Nudibranch, Chromodoris vibrata

This attractive nudibranch is named after the way its gills continually tremble and vibrate. You can see the exposed gills as a dark purple fringed circle towards the back of the nudibranch. The rhinophores are dark blue and look almost like ears towards the head of the animal.

Found in Japan, Marshall Islands, and the Hawaiian Islands.