In summer the beaches are populated with swimmers and tourists who enjoy the warm, crystal-clear waters but you just need to put on a simple mask and a snorkel to see that fish and marine species are also quite active in this period. If we are also equipped with a simple camera it is easy to film that marine life that practically lives in symbiosis with ours. ...
The Pagurus belongs to the Paguridae family. Hermit crabs are crustaceans with a curved and soft abdomen. It lives in empty shells of gastropods on which it sometimes attacks sponges or poisonous actinias to camouflage and defend itself. In case of danger it can withdraw completely inside the shell. The end of the tail of the hermit crab is suitable for strongly grasping the shell it always carries with it. When it grows and the size of the shell is no longer suitable is search for a new shell to protect yourself. In the video we see a hermit crab that has taken possession of the shell of the sea snail Phalium glaucum, a marine gastropod mollusc of the Cassidae family
This video was taken last Saturday (14/10/2023) during an inshore dive at about 15 meters deep. I mention the precise date because during the canonical 3 minutes of decompression at a depth of 3 meters hanging from the chain of one of the "safe water" signaling buoys, about 200 meters from the rocky and jagged coast, I decide to check the temperature of the water and the computer measured 25°C. ...
September 10, 2023 marked the eightieth year since the sinking of the Piero Foscari ship on September 10, 1943 in Castiglioncello near Livorno (Italy). In this video I show you what remains of the wreck completely destroyed during the last war. Furthermore, after 80 years the sea has caused further deterioration of the structure. The wreck is located at a depth of between 15 and 16 metres.
The Indian Triggerfish (Melichthys indicus), also known as the black-finned Triggerfish, has a brown body and black fins with white lines at the base of the dossal and anal fins. It is found across the Indian Ocean. They can grow up to 25 cm. long. The Indian triggerfish usually feeds on hard-shelled mollusks and echinoderms, but some feed on algae and zooplankton.
During navigation it sometimes happens that we stop for various needs, take stock of the ship, check the GPS, look at conspicuous points on the ground to detect the position, or simply to rest and swim. And sometimes we happen to find fish that strangely take shelter under our hull. In this case we are about 7/8 miles from the coast, therefore practically in the open sea, while with the engine off we were trying to check the seabed with the sounder to look for a new dive point.
In this video we can see a wonderful example of Spanish Mediterranean Dancer or Depilatory Sea Hare. It is a nudibranch mollusk, Aplysia depilans, that lives in the Mediterranean seabed at a depth ranging from 1 meter up to 10 meters. We met her in apnea in a rocky bottom around 2 meters. Elegant in its movements it seems to fly in the water with grace that would be the envy of a flamenco dancer.