The Yellowback Fusilier beloning to Caesionidae family, is a small to medium-sized fish which grows to about 40 cm. The body coloration is greyish blue with a bright yellow zone on the back. The yellow area goes from the forehead, between the eyes, to the tail, and includes the dorsal fin and thecaudal fin. This area corresponds more or less to the upper third of the body.

The Pteria hirundo is a species of bivalve belonging to the family Pteriidae. The species is found in Europe, Africa and the Americas. The two valves are unequal and the lower one, to which the animal is anchored, is larger and hollow than the upper one. The mollusk has a rounded body, with the margins of the two edges of the mantle fringed.

The Emperor Angelfish (Pomacanthus imperator) is a species of marine angelfish. It is a reef-associated fish, native to the Indian and Pacific Oceans, from Red Sea to Hawai and the Austral Islands. This species is generally associated with stable populations and faces no major threats of extinction. It is a favorite of photographers, artists, and aquarists because of its unique, brilliant pattern of coloration.

The Savalia savaglia, commonly known as gold coral, is a species colonial in the family Parazoanthidae. This organism is commonly called "false black coral". It owes its name to its ability to produce a dark-colored horny skeleton, usually blackish. The colonies are generally settled on pre-existing gorgonians skeletons and can grow with ramifications that far exceed one meter in length.

In the video we see a sequence of several freediving encounters made with the Brown meagre or Corb, Sciaena umbra. We have filmed this splendid fish many times and we will never tire of posting other encounters given the beauty of this species of Scianidae ...

Hermodice carunculata, the bearded fireworm, is a type of marine bristleworm belonging to the Amphinomidae family, native to the tropical Atlantic Ocean and the Mediterranean Sea. Bearded fireworms are usually 15 centimetres in average length, but can reach up to 30 centimetres. The bearded fireworm is a slow creature, and is not considered a threat to humans unless touched by careless swimmers. The bristles, when flared, can penetrate human skin, injecting a powerful neurotoxin and producing intense irritation and a painful burning sensation around the area of contact.