Night Dive in Punta Bilar House Reef. ID Help

[Lyndon C]

While on a night dive at Punta Bilar Dive Center House Reef, Punta Bilar, Surigao City, Philippines, i saw this beautiful nudibranch on a pink slender sponge coral. Pls help me ID this critter.

 

[Lyndon C]

photo no 2 ID Help

 

[Lyndon C]

photo no 3. ID Help

 

[Lyndon C]

Photo no 4. ID Help. This is about 5-6 inches across

 

[Lyndon C]

Photo No 5. this critter about 3 cm in size was clinging on a red orange sea fan

 

[Lyndon C]

Photo No 6. this monster looking decorator crab is about 5 inches. Pls Help me ID

 

[donnyb]

1) Genus Janolus, not positive of species
2) Tambja morosa
3) Hyastenus bispinosus
4) Calappa calappa
5) Xenocarcinus conicus
6) Lauridromia dehaani

 

[Lyndon C]

thank you so much donny b. i am amazed with your ID knowledge.

 

[Lyndon C]

1) Genus Janolus, not positive of species
2) Tambja morosa
3) Hyastenus bispinosus
4) Calappa calappa
5) Xenocarcinus conicus
6) Lauridromia dehaani

tried to research photo no 1, is it a Janolus cristatus?

 

[donnyb]

I don't think so Lyndon. Those J. cristatus images you link to on nudipixel are all in the Atlantic & Mediterranean...

I took a quick tour through the rest of the nudipixel images for the genus, didn't see a match.
It could very well be an as yet undescribed species.
Did you also take a look on these sea slug forums?

http://slugsite.us
http://www.seaslugforum.net