Commercial fishing that recently resumed in a vast protected area of the Pacific Ocean must halt once again after a judge in Hawaii sided with environmentalists challenging a Trump administration rollback of federal ocean protections.

A judge has blocked U.S. President Donald Trump’s move to reopen large swaths of the Pacific Islands Heritage Marine National Monument to commercial fishing, ruling that the NOAA Fisheries letter authorizing fishing in the monument is unlawful.

A federal judge in Hawaii has outlawed commercial fishing in the Pacific Islands Heritage marine national monument, a protected and fragile ecosystem in the Pacific Ocean.