You will have the opportunity to dive in the Posidonia oceanica meadow, an endemic Mediterranean plant, not a seaweed. The meadow plays an essential rule in the ecological equilibrium of the sea. From a local point of view, the meadows are the habitat and the food for a big number of species of fishes and invertebrates, especially larvae and young fishes.
The plants of Posidonia oceanica grow forming submerged, long, high and wide meadows, on sandy or on fine and coarse gravel bottoms. For an optimum growth it needs transparent waters. For this reason, the presence of dense and large meadows is a clear sign of the quality of its waters
They also play an important role in the processes related to the beach and dune system. The dead leaves of Posidonia oceanica that can be found on the shore act as a natural spring that reduces wave energy, minimizing erosion.

Fuente: www.posidoniamallorca.org