The body is covered with spots of white to pale blue. It also lives in Japan. For now, British Columbia’s nudibranchs appear to be doing just fine. The Club Orange Clubbed Nudibranch, Photo by Ben Wiid @two_ocean_one_breath 10. Spotted Dorid intertidal to at least 33m size usually 20-50mm, but up to 180mm northern Mexico to Port Hardy, BC This species is rarely seen in WA and BC. A population explosion of any one nudibranch species may serve as an early warning system for further problems. It seems to arrive only during extremely warm summers. Nudibranchs also soak up their prey’s pigment into their tissue, which allows them to be camouflaged while feeding atop the very animals they eat. Scientists are keenly interested in nudibranchs for two reasons. Features: 2.5-4cm long. The Halgerda is a dorid type of nudibranch, meaning they … Body white with orange bumps. As with many dive sites on Puget Sound, this site should be only be done at slack. These is not an overly common nudibranch, but I note them fairly regularly at Keystone Jetty and … As I tried to take pictures of it, the pipefish worked its way through a maze of small creivces and rocks. One is they believe the chemicals these animals store could be used to develop new medicines for use in humans. Some employ camouflage to blend in with their surroundings, while others use their vibrant and contrasting colours to deter predators from devouring them. There are more than 3000 known species.. Nudibranchs are one of the groups which are informally known as sea slugs.This is a term which includes other Gastropod groups which look similar to nudibranchs. Once you spot one and dive down close, hanging weightless above the animal, you simply cannot take your eyes away from the neon colours dancing in the light, the soft tentacle-like arms swaying in the swell. The bright orange protuberances contrast dramatically with its creamy white body, and it's head is the broad end on the left side of the photo. The warty nudibranch is often found in shallow waters, up to just 3meters (10 ft), where it is spotted under rocks or sitting on orange coloured sponges which it uses for camouflage and food! The Spanish shawl nudibranch (Flabellina iodinea) feeds on a species of hydroid called Eudendrium ramosum, which possesses a pigment called astaxanthin that gives the nudibranch its brilliant purple, orange, and red coloration. They are also totally mesmerising. They appear to be seasonally common; at some times, several can be seen during a visit. Last updated: Nov 16 2020. Look closely at the nudis. What’s Next?  The coastal waters of the cape are some of the richest and most diverse in the world. Canadian Geographic is a magazine of The Royal Canadian Geographical Society. Global warming threatens the genetic diversity of some marine species and compromises their ability to evolve as undersea environments change. The... Another one appears on the sea floor like a ghost with rabbit ears. Since our work as underwater photographers requires us to have more than a passing acquaintance with nudibranchs, we photograph as many species as we can. And one even looks like a little marine rhinoceros with orange-tipped horns. The Gas Flame Gas Flame Nudibranch, Photo by Richard Darke @RCDImages To learn more, visit. One nudi looks like an open gas flame blazing underwater. Non-scuba divers are no less enthralled whenever they are shown pictures of these beguiling sea creatures. 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