by showing peerless island ranger igor cotton stays here in the far east marine nature reserve a small outpost for months on end. the bay near his makeshift home is an ideal place for monitoring fish. alexander mock if it's a marine biologist is a frequent visitor to pale as island. hold it hold it i hold it and you tie it to. his diving gear travels with him wherever he goes but his work place is the sea floor twice a day he goes underwater to study the behavior of fish in the natural environment. for years nicol i have befriended some of the fish. and i have regular contact with them. i think with some of them spawn here in mid september. you can sometimes a female fish sticks around here for several days. by truck or movements to see where she spawns. alexander needs to locate and catch several fish species to carry out d.n.a. tests the results are incorporated in a single database under an international program. during his first dive he has enough time to catch the fish he needs for analysis for the second he will do nothing but watch as he keeps still half a meter above the sea fl