A fish can have up to three dorsal fins. The dorsal fins serve to protect the fish against rolling, and assist it in sudden turns and stops. 1  In anglerfish, the anterior of the dorsal fin is modified into an illicium and esca, a biological equivalent to a fishing rod and lure.he pelvic fin assists the fish in going up or down through the water, turning sharply, and stopping quickly. 1  In gobies, the pelvic fins are often fused into a single sucker disk. 2  Pelvic fins can take many positions along the ventral surface of the fish.
BP plc, also referred to by its former name British Petroleum, is one of the world 's seven  supermajor  oil and gas companies.P has one of the worst safety records of any major oil company that operates in the United States. Between 2007 and 2010, BP refineries in Ohio and Texas accounted for 97 percent of egregious, willful violations handed out by the U.S. Occupational Safety and Health Administration (OSHA).
BP has a primary listing on the London Stock Exchange and is a constituent of the FTSE 100 Index; it had a market capitalisation of Â£85.2 billion as of April 2013, the fourth-largest of any company listed on the exchange. It has secondary listings on the Frankfurt Stock Exchange and the New York Stock Exchange.P is the second largest producer of oil and gas and the largest leaseholder in the deepwater Gulf of Mexico. The company produces roughly 10% of its global output in the region, over 252,000 barrels per day (40,100 m 3 /d) of oil equivalent. Of the seven largest drilling platforms in the Gulf, four are operated by BP.