Most of the island's fauna and flora is underwater. Fifteen diving sites are in operation on the steep slope of Saint-Louis bay (in the west). This is where you will see red and yellow sponges, anemones, urchins and black corals. There are also many fish species: lionfish, multicoloured parrot fish, convict-uniform fish, batfish and trumpet fish which perform an endless ballet dance and balloonfish pump up as you come closer. Green or dotted morays only let their heads through a hole in the rock. You might be lucky to see the deep sea monsters - sharks or manta rays - however, they are among the fauna that are almost always hiding!