Marine plastics pollution is a type ranging in size from large original material such as bottles and bags, down to microplastics formed from the fragmentation of plastic material. Marine debris is mainly discarded human rubbish which floats on, or is suspended in the ocean. Eighty percent of marine debris is plastic. Microplastics and nanoplastics result from the breakdown or photodegradation of plastic waste in surface waters, rivers or oceans...

Brown Meagre (Sciaena umbra) is one of the most beautiful fish in the Mediterranean Sea and in this dive we met two of them on a rocky bottom of about 38 - 42 meters deep. As you can see we managed to get very close without scaring them and they then showed us their beautiful colors and reflections, captured by our torches and cameras.. ...

Fusiliers fish Caesio are found in coastal areas of the Indian and Pacific Oceans, including the Red Sea. One species, Caesio varilineata has been recorded in the eastern Mediterranean, probably having reached there through the Suez Canal as a Lessepsian migrant. They are mainly found on coral reefs.

Cushion coral, Cladocora caespitosa is a typical madrepore of the Mediterranean Sea, it belongs to the Hexacorallia class and to the Cnidaria phylum., It usually has a brownish, beige or dirty white color, this one in the video is unusually very white, probably because it is "still young". It is a colony of polyps that live in symbiosis with zooxanthellae algae. The polyps form calcium carbonate deposits that form the cells in which they live and that make the madrepore grow in size ...

At night, most fish slow down their activity, some species sleep, others enter a sort of stasis, others reduce their metabolism to a minimum while remaining alert and vigilant to dangers. We can say that fish actually take micro-sleeps both during the day and during the night.. ...

During a decompression stop the surface sea current carried with it numerous transparent marine organisms. They were various Ctenophores that I managed to identify. What you are seeing in the video is a salp. A salp is a barrel-shaped, planktonic tunicate in the family Salpidae. It moves by contracting, thereby pumping water through its gelatinous body, one of the most efficient examples of jet propulsion in the animal kingdom.