Curiosities about nudibranchs

Elysia timida by Miquel Pontes

Did you know…?   The word “nudibranch” means “naked gills”. Derives from the Latin “nudus” (naked) and the Greek “brankhia” (gills). It refers to the small flower shaped protuberances that can be seen on the back of many of these animals. There are more than 3,000 species of nudibranchs. They live from the surface to depths of 2,500 meters. They are found in all seas, from the tropics to the…

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Opisthobranchs introduction course at Roses Sub

Curso de Opistobranquios en Roses Sub (Roses, Girona)

On 23 September 2017 Miquel Pontes and Sara Fuertes of the VIMAR Research Group leaded an introductory course to the opisthobranchus molluscs at the Roses Sub Dive Center (Roses, Costa Brava, Spain). The course consisted of four parts: an introduction to the opisthobranchs, a talk (ecobriefing) prior to the dive, a SCUBA dive at the Bau del Lladó (Roses) where the students concentrated on finding these colorful animals on the…

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Opisthobranch biodiversity course; techniques to find them

Felimida purpurea @ Cala Montgó, L'Escala, Spain 5-03-2016 by Miquel Pontes

On September 13, 2017 a lecture on opisthobranchus molluscs, presented by Manuel Ballesteros, was held in Classroom 9 of the Faculty of Biology of the University of Barcelona, ​​with the participation of Miquel Pontes and Enric Madrenas, the three founding members of VIMAR research group. These talks, open to the general public, had good attendance. There were members of CIB, Biology students and several divers who wanted to know this…

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How to differentiate the pink “flabellina”

Flabellina affinis by Miquel Pontes

Any diver with a certain experience searching for opisthobranchs in the Mediterranean Sea or NE Atlantic could tell you that, sometimes, it is pretty difficult to tell apart which species of pink “flabellina” you are looking at. It’s not really that difficult, as long as you know what to look at in order to differentiate them. Here we include the main traits of the most common species: Flabellina affinis has the following characteristics:…

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How to distinguish the blue Felimare

Felimare tricolor by Enric Madrenas

Any diver with a certain experience searching for opisthobranchs in the Mediterranean or Eastern Atlantic could tell you that, sometimes, it is pretty difficult to tell apart which species of blue Felimare nudibranch you are looking at. The new genus Felimare recently replaced the classic denomination Hypselodoris that is found in most printed books. Felimare opisthobranchs of the Mediterranean and Atlantic Ocean were revised by Ortea et al in 1996. Still…

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Tylodina perversa, a sheep disguised as a wolf

Tylodina perversa @ Islas Canarias by Aketza Herrero

Tylodina perversa is an opisthobranch species quite common in the Costa Brava (NE Spain), especially on sponges Aplysina (Verongia) aerophoba that are found in very shallow water. Although it has been always considered carnivorous -it is always found feeding on the same type of sponges-, a more detailed study put this fact in jeopardy. Every indication shows that the opisthobranch consistently prefers the sponges with a greater ammount of cyanophyte…

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Chromodoris quadricolor @ Red Sea By Miquel Pontes

Welcome to OPK blog Here we’ll publish every fact and curiosities that we come across in our opisthobranch research. This part of our website will no longer be updated, all posts are now in the new VIMAR website:   These are the present posts in OPK blog: Biology VIMAR events

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