Dr. David Johnson, an ecologist at William & Mary’s Virginia Institute of Marine Science, has spent more than 20 years in salt marshes, at sites all along the U.S. East and Gulf coasts. But while doing research in a Virginia salt marsh at low tide last September, he and colleagues saw something they’d never seen before—blue crabs ambushing fiddler crabs from shallow, water-filled pits.
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Source: Phys.org