Clark and a group of researchers published a study that was the first and only account of all sharks killed collectively a year. From the auction records in Hong Kong indicate that there could have been 26 to 73 million sharks killed each year. Sharks are an important part of the ecosystem, and without the sharks the marine ecosystem would fail. Sharks are responsible for feeding on smaller fish. And without the sharks feeding on these fish our seas would be stripped of important plants, because of over consumption.
However, there are programs that help decrease the number of shark deaths. Shark Savers, Wild Aid, and Finished with Fins all play a major role in world wide shark conservation. they were able to decrease annual shark consumption from 10,292 tons to 3,087 tons in just one year. Almost a 70 percent decrease. Authorities were also able to enforce new laws to help save sharks in Asia. Pollution is another leading factor to the decline in marine habitats. Marine pollution includes a range of threats including from land based sources, oil spills, and trash. In 2010 Deepwater horizon oil was the largest oil spill to date. Around 4.9 million barrels of oil leaked into the water, the spill affected 8,332 species worldwide. But this incident only accounted for 12 percent of oil in our world's oceans. 36 percent of pollution comes from street runoff and parking