The rich fish fauna includes several resident species that inhabit the inshore area (such as bream, scorpion fish and colorful wrasses). Groupers, croakers and moray eels inhabit numerous crevices of the rocky seabed. There are also fishes called “di passo” as the snapper and barracuda Mediterranean (Sphyraena sphyraena) called by fishermen Aluzzo. Plant life includes complex algal communities but finds its highest expression in the presence of Posidonia; higher plants (with leaves, stem and roots) of huge ecological value and able to form extensive underwater meadows. The posidonieti of the area are characterized by a good degree of conservation and their interesting structure makes them particularly worthy of protection (in waters off the west of Capo Gallo you can see an interesting and uncommon posidonieto on the rock). The coral side (association that characterizes the rocky bottoms of some depth) and the environments of numerous caves submerged and semi-submerged complete the list of marine habitats of great value on the site.
The coastal area of Capo Gallo is full of crevices and small caves. The caves are home to populations ranging inward according to the gradual reduction of light and hydrodynamics, reproducing those changes in the forms of plant and animal life that normally we find down to greater depths. The transition from bright habitats in the shady ones is accompanied by the emergence of the red algae, and continuing to the cavity darkest, the gradual prevalence of the animal life of the plant. Animal life is evidenced by the presence of bryozoans (including Myriapoda truncata), of colorful anthozoans (Astroides), tunicates and several species of sponges, some of which typically depigmented. The pelagic marine life, particularly present for the current and the geographic location, includes several representatives of the animal kingdom, beginning with simple and planktonic life forms, such as the beautiful jellyfish Cotyloriza tuberculate and Rhizostoma pulmo (lung of the sea); up to the largest pelagic vertebrates such as amberjack, tuna and even reptiles (Caretta caretta) and marine mammals (Tursiops truncatus, Stenella coeruleoalba) which occasionally can cross off the coast.