Harmful human activities on the seas and oceans. However, not only sweet water are at risk. Seas and oceans are also becoming increasingly brutalized, and the life in them is decreasing. Oil extracted from the sea bed around a quarter of crude mined worldwide. It is very necessary, since the distillation of the fractionation is obtained from the petrol, petroleum jelly, paraffin, lubricants, bitumen and oil. When it comes to offshore drilling accidents, pipeline or tankers, huge quantities of crude oil enter the oceans. Such crude obligate fish and all aquatic organisms. With the force of reason, throughout the An oil coated. They lose their job, not only fishermen but also the owners and employees of the sea resorts, rental of water, etc. Another growing threat, they become massive fishing. Shoals of fish detected by using echoed and satellite imagery, and then using a large network, catching them. Fish do not have hardly any chance of escape. In this way Wyomingite have many species of fish, there were limits placed on fishing.