BP stock prices again fell. By January 2007, the explosion, coupled with a pipeline spill in Alaska and production delays in the Gulf of Mexico, left BP's stock down 4.5% from its position prior to the Texas City explosion. However, by April 2007, stocks had rebounded 13% erasing the 8.3% loss from 2006. Declining oil prices and concerns over oil sustainability also caused shares to fall in value in late 2008. The Deepwater Horizon oil spill in April 2010 initiated a sharp decline in share prices, and BP's shares lost roughly 50% of their value in 50 days. BP's shares reached
Environmental impact of the Deepwater Horizon oil spill that the damage from the spill would rapidly resolve, three years into the recovery dolphins continue to die, fish are showing strange lesions, corals in the gulf have died and oil still remains in some marsh areas. Due to both its size and the way it was handled, there is little previous research to predict long-term effects. At the 2013 "Gulf of Mexico Oil Spill and Ecosystem Science Conference", oceanographer David Hollander presented data that showed as much as one-third of the oil released during the spill may still be in the gulf. Researchers described a phenomenon called "dirty blizzard":