A shark ‘superhighway’ is being protected by fishermen

For sharks, turtles and rays in the Caribbean, the Mesoamerican Reef — which spans more than 600 miles from Mexico to Honduras — is a busy highway. As the second-largest barrier reef in the world, marine species use it to navigate north and south, and its rich tapestry of coral, seagrass and mangrove forests provide vital food and habitat.