Sea Slugs

Sea slugs are among our favorite subjects.

If you find them interesting go check out the Sea Slug Forum, where the world's experts congregate.


Nudibranchs range from smaller than a fingernail to the length of your forearm, and come in many colors.

Phyllidiopsis shireenae

Phyllidiopsis shireenae Phyllidiopsis shireenae

Chromodoris dianae

Chromodoris boucheti Chromodoris boucheti Chromodoris boucheti

Phyllidia ocellata

Phyllidia ocellata

Phyllidiella pustulosa

Phyllidiella zeylanica

Chromodoris africana

Chromodoris africana

Phyllidiella cf annulata

Phyllidiella zeylanica

Pyjama slug, Chromodoris quadricolor

Chromodoris hamiltoni

Phyllidia marindica

Phyllidia varicosa

Chromodoris strigata

Chromodoris hamiltoni

Spanish dancer, Hexabranchus sanguineus

Hexabranchus sanguineus

Headshield Slug, Chelidonura electra

Chelidonura electra

This was the only headshield slug we saw. It is almost entirely white.


Racing stripe flatworm, Pseudoceros bifurcus

Pseudoceros bifurcus

Pseudoceros sp.

Pseudocerus cf. laingensis Pseudoceros cf. lindae Pseudobiceros gloriosus Pseudoceros lindae

You would expect an amimal called a "flatworm" to be uninteresting, but underwater worms are beautiful.

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Last modified 5 November 2019