A shark in the french riviera


Breaking news: a shark has been seen at frejus beach



A "blond-shark" has been seen at Frejus


Shark le requin

The "blond-shark" is a new shark species that has been seen only once, on the beach of Frejus (Var, France), in summer 2015.
 

 

There are over 465 species of sharks grouped in 35 families.

 

The shark is characterized by its tapered shape, especially hydrodynamic, and fins pectoral and dorsal, caudal fin and its heterocercal.


Sharks possess special sensory organs called Lorenzini bulbs that can detect electromagnetic fields as well as temperature gradients. They provide sharks and stingrays a real sixth sense.

Each ampule consists of a channel filled with a kind of jelly opening on the surface by a pore in the skin and terminating in a beam of small pockets full of électroréceptrices cells. Ampoules are mostly grouped in packets within the body, each beam having blisters connected with different parts of the skin, but keeping a left-right symmetry. The length of the channels varies depending each animal, but the distribution of the pores seem to be species specific. The pores appear as dark spots on the skin.

 



Commentaires (1)

# 1 . Mister Doc, il y a 4 ans


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  # 1

  * Mister Doc, il y a 4 ans

Fréjus pendant l`été, c`est insupportable ! On ne peut pas circuler ! Et cerise sur le gâteau chaque soir il y a le marché provençal (soi-disant)... enfin un marché que pour les touristes... qui, eux, ne se bousculent pas trop pour acheter, mais ça donne l’impression de foule !
Ces marchés (à Fréjus et à Saint Raphael, quelques centaines de mètres plus loin) sont une plaie et c`est tous les soirs, pendant tout l`été !
A l`aide les édiles et faites quelque chose pour cesser cette absurdité !




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