An Opalescent Nudibranch, sometimes called a Flame Tip nudibranch, laying a ribbon of eggs.

Location: Browning Passage, British Columbia, Canada

Jett Britnell

This Nembrotha nudibranch was searching for food inside a tunicate vase.

Location: Lembeh/Sulawesi, Indonesia

Filip Staes

Beautiful photograph of a crawling nudibranch.

Location: Ningaloo Reef, Exmouth, Western Australia

Kelly Sobczak

This nudibranch was photographed using UV lights during a night dive.

Location: Lembeh, Indonesia

Martin Klein

An emperor shrimp upon his nudibranch throne.

Location: Northeast Coast of Taiwan

Chia Chi Chang

This tiny little nudibranch (Costasiella sp.) looks so cute. White head and black rhinophores; cerata green with reddish tips. It looks like a sheep stopped eating grass.

Location: Bali, Indonesia

Lynn Wu

Nudibranch Janolus cristatus

Location: Chalkidiki, Greece

Nicholas Samaras

This Chamberlain's Nembrotha nudibranch looks like a bull getting ready to charge at the photographer.

Location: Anilao, Philippines

Lynn Wu

Some large nudibranch like this, especially the coral eaters, tend to aggregate in crevices during the day, or under the coral colony and emerge only at night to feed.

Location: Anilao, Philippines

Jim Chen

A beautiful nudibranch posing for the camera.

Location: Lembeh, Indonesia

Martin Klein

This is a Glaucus atlanticus nudibranch who moves with the current and eat false jellyfish, Physalia physalis

Location: Tenerife, Canary Islands

Francis Perez

Spectactular photo of a nudibranch floating in the night.

Location: Giglio, Italy

Filippo Borghi

Nudibranch species: Hermissenda crassicornis

Location: Puget Sound, WA, United States

Tom Radio

This Phyllidia varicosa nudibranch was found inside a cave in Kona, Pyramid Pinnacle.

Location: Kona, Hawaii, United States

Taiki Sakai

Photograph of a vibrant nudibranch caring over its ribbon of eggs.

Location: Capo Noli, Italy

Maurizio Pasi

Ringed Favorinus, grows to about 10mm. White body with yellow to orange cerata with dark tips. Like all species of Favorinus it feeds on sea slug eggs, including Sea Hares and nudibranchs.

Location: Anilao, Philippines

Jim Chen

This nudibranch, photographed at the top of a reef, looks like it's about to take off in flight.

Location: Kenting,Taiwan

Johnny Chiou

An emperor shrimp shows off his symbiotic swagger by taking a ride on the back of this regal-looking nudibranch.

Location: Lembeh Strait, Indonesia

Marchione Giacomo

Location: Anilao, Philippines

Irwin Ang

Up close and personal in nudibranch central.

Location: Anilao, Philippines

Parnupong Norasethkamol