In the Natural park is a protected marine extension of 12,000 hs, corresponding to one mile marine from the coast, with more than thousand species between flora and fauna, that does that altogether, given described the geologic aspects of vulcanism, can be spoken of biotipe sailor of first order.

The cliffs, that represent the greater percentage in the coast of Níjar, have one varied continuation under the water, profusely of grottos, caves, walls, extraplomos, blocks and typical magmatic outcrops of volcanic génesis and marine erosion, generators of one of the more beautiful marine bottoms and better conserved of the Mediterranean.
The rocky composition and the clarity of their water, of up to 18-20 meters in optimal conditions, turn it a paradise for the contemplativo and photographic diving.
In some places, like Mónsul or Rodalquilar, we can enjoy this so single beauty to a meter of depth, being able, until the most timid swimmers, to be surprised of this unusual wealth. It will be from the 5 meters and until the 20 where the most experimented they enjoy a unique spectacle which we will divide for its better understanding in three bottoms:

1. - Sand bottom
First, with variety of thickness in the sands, it shows the fine one greater depth, seated in a bottom muddy with fanerógamas marine, that are, more than seaweed, true plants with flowers, a rich fauna camouflaged between sediments: bivalvos moluscos like the coquinas, to chir them, etc... gasterópodos like cañailla, eggs of nática and cephalopods, like jibia.
Also famous sprocket wheels and other equinodermos, as the sand star; varied crustaceans of type crab and an endless ones of fish like salmonete, the Herrera, tordo, etc.

2. - The rock bottom.
In him one is, to little depth, the vegetal cover filled with seaweed, sponges, madréporas, anemones, false chorale, annelids, moluscos, sprocket wheels and stars, like the burdock and fish of colors like the Musical fish or Little king, the Verrugallo, the Green Fish, the Mojarras and to greater depth, the Mere one, Colored person and the Rascacio. All of them find great amounts of foods between the seaweed and refuge in the cracks, in a delicate balance with which all we must collaborate.

3. - Plains of posidonia.
He is posidonia one fanerógama with flowers, leaves, rizomas and roots. Form ample lifting prairies of the primary production, the oxigenación and even influences in the movement of the masses of water. Seated initially in rocky bottom to 20 m.s of depth, it is populated by numerous species with equinodermos and cephalopods (common squid), nacra (bivalvo giant) and the red stars.