This blog I will dedicate it to some of Tenerife molluscs, because all dives are very rich in mollusc’s biodiversity, and they are remarkable.
Diving this past week we have seen some beautiful cuttlefish- Sepia officinalis- that is usually found on sand bottom where they can bury. Cuttlefishes are able to do amazing changes of coloration. We also have seen really big Octopi- Octopus vulgaris– which are very intelligent animals which also have the ability to quickly change colour and texture depending on its mood.
The Rough penshell –Pinna rudis- is a triangular bivalve, which can reach 40 cm, is the biggest bivalve present in the Canaries Islands. We can found it in shallow waters, standing up perpendicular to the bottom. The valves usually are home to a couple of prawns.
In most of the last dives we have seen nudibranch eggs (Las Eras, Montaña Amarilla, Cueva de los cerebros). Therefore we are expecting os see plenty of nudibranch when we are diving this summer (finger cross).
The most abundant nudibranch in south Tenerife is real nudibranch –Hypselodoris picta – they can be quite big (up to 15cm) black bluish colour with yellow spots or stripes. We found them usually alone and during daytime. They feed on sponges; from with they get toxic metabolites for defending from predators.
At “Cueva de los cerebros” we have found some pretty amazing mollusc: the Warty Umbrella Snail – Umbraculum mediterraneum– they feed on sponges and they have a circular body, up to 20 cm. Its body is full of pustules and it is much bigger than its self.
Until next week!! Gone diving…