the shores of senegal, nicholas hank reports now from the fishing time, a kiosk. deep in senegal, the territorial waters, 500 meters below sea level, are creatures that humans have not yet encountered. it is a canyon as long as the great wall of china, 400 kilometers, and 100 meters high. this is the world's largest cold water reef home to oysters, that are 30 centimeters long and 500 years old. here are the court of orest reef each fish and endangered charge to meet it is at the edge of this precious ecosystem until now, undisturbed by human interaction. that while the national companies are preparing to extract billions of barrels of oil in the trillion cubic feet of gas, since the drilling began, endangered dolphins, turtles, and other sea life have washed up on the shore. fishermen by bureau fall has never seen anything like it. and says, it is a bad omen. also if i feel pain and sadness, they like us, they like human beings. these are noble animals, the guide us when we go fishing while they lead other fish, their death is a bad sign. clinicals ministry efficient says oil and gas