The Deepwater Horizon Oil Spill’s Hidden Impacts on Mahi-Mahi

Mahi-mahi were more likely to be eaten and less likely to spawn after being exposed to sublethal concentrations of oil, raising concerns about the risks oceanic drilling pose to life in the ocean.

Written byNatalia Mesa, PhD
| 5 min read
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On April 20, 2010, the Deepwater Horizon oil rig exploded, dumping 134 million gallons of crude oil into the Gulf of Mexico over the course of 87 days. The spill has been called one of the worst environmental disasters in history, and is estimated to be responsible for the deaths of thousands of marine mammals and sea turtles, just under 1 million coastal birds, and probably millions of fish—though even now, more than a decade later, scientists are still unpacking the spill’s catastrophic impacts.

“It’s important to understand the true costs of an oil spill in terms of ecological damage so that we can appropriately weigh the decision of drilling in new locations,” says Lela Schlenker, a marine biologist at the Coastal Studies Institute at East Carolina University. At the time of the spill, oil and gas company BP was leasing the Deepwater Horizon oil rig from Transocean.

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    As she was completing her graduate thesis on the neuroscience of vision, Natalia found that she loved to talk to other people about how science impacts them. This passion led Natalia to take up writing and science communication, and she has contributed to outlets including Scientific American and the Broad Institute. Natalia completed her PhD in neuroscience at the University of Washington and graduated from Cornell University with a bachelor’s degree in biological sciences. She was previously an intern at The Scientist, and currently freelances from her home in Seattle. 

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