The Marine Mammal Climate Change Protection Act (H.R.1383 ) would amend the Marine Mammal Protection Act to direct the National Oceanic and Atmospheric Administration to develop climate impact management plans for marine mammals that are at significant risk due to the climate crisis. The plans would include strategies for mitigating the harm posed to these species by climate change.  H.R.1383 would update the law to require federal agencies to consider the impacts of the climate crisis on whales, sea otters, polar bears, manatees, and other marine mammals and help protect them as the effects of the climate crisis worsen.