Trump administration sued by wildlife groups over offshore drilling tests

• Seismic air guns could harm dolphins and whales
• 'This action is unlawful and we're going to stop it'

Environmental groups have sued the Trump administration over offshore drilling tests, which could harm hundreds of thousands of marine mammals such as dolphins and whales.

The lawsuit filed in federal court in Charleston, South Carolina, claims the National Marine Fisheries Service violated the Marine Mammal Protection Act, the Endangered Species Act and the National Environmental Policy Act when it issued five permits for the use of seismic air guns.