Trump plan to shrink ocean monuments threatens vital ecosystems, experts warn

Ryan Zinke has recommended three major marine monuments be reduced to allow greater commercial fishing, prompting anguish from environmental groups

The Trump administration's plan to shrink four land-based national monuments has provoked howls of anguish from environmental groups, Native American tribes and some businesses, such as the outdoors company Patagonia.

Accompanying changes to protected monuments in the oceans - vastly larger areas than their land-based counterparts - have received less attention, but could have major consequences for the livelihoods and ecosystems dependent upon the marine environment.