Symbiosis is quite frequent in the underwater world and in recent days we have witnessed one of the most classic forms of symbiosis in our Mediterranean Sea, that between the Hermit Crab (Pagurus bernhardus) and the Hermit Crab Anemone or Actinia (Calliactis parasitica). We are exploring a seabed composed of a coral wall that varies from 46 to 49-50 meters deep ...

In Italy, public awareness of the detrimental impact of this species on local molluscs is rapidly growing and, especially in the Po delta area and on the Adriatic sea coast, eradication efforts are undergoing, both by local authorities and by local fishermen. From the 2000s until 2023 the species was reported throughout Italy. We met her, Callinectes sapidus, in Rosignano Solvay in the Province of Livorno where we took the photos and video you are seeing.

We are in one of the many underwater caves of the Mediterranean Sea where the colors of the red coral, Corallium rubrum and Yellow cluster anemone, Parazoanthus-axinellae, explode in a splendid show that we can only find in caves. However, the caves are also the ideal habitat for many species of crustaceans such as the Galathea, Galathea squamifera, and the cave crab, Herbstia condyliata. ...

Slipper lobster, Magnosella, Scyllarus arctus (Ciacala di mare or Batti batti) are becoming increasingly rare in our Mediterranean Sea. Slipper lobster has even become a protected species in Italy due to indiscriminate fishing and the change in the conditions of its habitat ...

In this video we can see how animals of different species can live in symbiosis. The relationship between Anemone and Paguro  is well known ...