Bolinopsis vitrea, is a species of comb jelly in the family Bolinopsidae, It is found in the Atlantic Ocean and Mediterranean Sea,it was first described by the American biologist Louis Agassiz in 1860. In Florida waters, Bolinopsis vitrea is the most common ctenophore.

I met this Calyx nicaeensis, Goblet Sponge, during a dive in the reefs of the Secche di Vada near Livorno. The name owes it to its characteristic goblet shape. According to some experts, this sponge has become extremely rare in the Mediterranean because it requires very stable water temperature and biological conditions: small variations are enough to decree its disappearance. We all know by now that climate change has a heavy impact on biological life, but few seem to realize that it also affects the deep sea.