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Blue Dragon Nudibranch, Serpent Pteraeolida

Pteraeolidia ianthina


"Variable in color ranging from pure white in juveniles to brown, green or blue. Color depends on the amount of symbiotic zooxanthella living in the tissues. Always has 2 - 6 mauve bands around the oral tentacle" Source:- Neville Coleman's Marine Life eGuide Pteraeolidia ianthina, commonly known as the 'Blue Dragon' by divers in eastern Australia, is one of a group of remarkable aeolid nudibranchs which are way ahead of man in harnessing solar energy. Pteraeolidia has evolved a method of capturing and farming microscopic plants (zooxanthellae) in its own body. The plants flourish in this protected environment and as they convert the sun's energy into sugars, they pass a significant proportion on to the nudibranch for its own use. Source - Sea Slug forum


Spotted at Pinnacle, Ligpo Island at a depth of about 6 m.

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Eric Noora
Eric Noora 9 years ago

Thanks Harsha. Will let you know :-)

Harsha Singh
Harsha Singh 9 years ago

I shall be waiting. :)

Eric Noora
Eric Noora 9 years ago

Thank you Harsha. Unfortunately wasn't able to take a video. Will try to do one on a next spotting of this magnificent nudibranch :-)

Harsha Singh
Harsha Singh 9 years ago

Amazingly pretty! Do you have a video? Want to see it waving.

Eric Noora
Eric Noora 9 years ago

Thanks Nopayahnah :-)

Maria dB
Maria dB 9 years ago

That is very cool!

Eric Noora
Eric Noora 9 years ago

Gracias harsuame. It is. :-)

harsuame 9 years ago

Interesante bello color y forma

Eric Noora
Eric Noora 9 years ago

Thanks so much Gerardo :-)

Gerardo Aizpuru
Gerardo Aizpuru 9 years ago

Extraordinary Eric!
Wonderful blue dragon

Eric Noora
Spotted by
Eric Noora

Batangas, Philippines

Spotted on Feb 5, 2012
Submitted on Apr 13, 2012

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