I think you mean luminescence rather than fluorescence. Flourescence is a phenomenon in which objects glow when they absorb ultraviolet light. I think some parrots' feathers do this. Quite a few animals glow through chemical reactions occurring in their bodies or from chemical reactions occurring in microorganisms that live in their bodies.
We normally call this bioluminescence. There is a page on the Forum on Bioluminescence in nudibranchs but I am afraid it doesn't have much information. The only group I know of are the polycerid genus Plocamopherus.
If you look on the Fact Sheet for Plocamopherus imperialis I have included a photo and a description of how this animal can make flashes of light.
Unfortunately I have no idea how it does it, and I am pretty sure no research has been done on this. I'm a senior student in the Philippines. I'm curious and i wanna know what specific gland or organ of the sea slug produce their color pigment.
They actually look like defenseless small fragile creatures, and lacking a protective shell like the sea snails, some very close relatives, they should go unnoticed in an environment full of potential predators like the rich waters of Lembeh.
Biologists call it aposematism ; it is the ability to prevent attacks by warning potential predators that the animal has defenses such as being unpalatable or poisonous, displaying flamboyant colors or contrasted stripes. Many nudibranchs feed on sponges or tunicates, which contain toxic or distasteful chemicals that will be concentrated in their body, making them toxic or inedible for the potential predators.
The nutrients that come free during this proces help the nudi to survive for months on end, as it is an efficient source of energy. The natural world keeps on surprising us, so when we learn about species or the underwater world at Divine Diving, we like to share it with you via a blog post like this.
We believe that through sharing information and educating each other, we can make a difference , as we only protect what we love. We hope you love nudis and want to protect them too! Follow us to keep in the loop of exclusive offers and the latest news! You must be logged in to post a comment. Home Blog Five reasons why nudibranchs are simply incredible.
February 05 0 Comment. Posted by Divine Diving In Blog. Tony Brown, Flickr. The Spanish dancer Hexabranchus sanguineus is one of the largest species and best swimmers of the nudibranchs. When the Spanish dancer swims , the wide edges of its mantle the parapodia are pushed through the water in a graceful undulating movement reminiscent of flamenco dancers. The Spanish dancer is also known for covering its egg cluster with toxins taken from its venomous food in order to protect the eggs from predators.
This nudibranch Felimare californiensis is making a comeback to a location it hasn't been to in years. First discovered off the coast of Southern California in , it was thought to be extinct in the region since due to pollution. But the nudibranch, with its blue and gold color scheme matching the University of California , has been spotted off the Southern California coast several times since Scientists have their fingers crossed that this indicates a larger comeback for the species.
Amidst the bright blue tufts and the dark blue fringes of the beautiful Risbecia tryoni , you might not even notice the red emperor shrimp Periclimenes imperator.
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