The number of rays is growing in coral reef ecosystems around the world as overfishing obliterates shark populations. The findings come from a global study using thousands of underwater cameras to ...

The return of apex predators such as sharks can restore critical ecological balance to coral reefs, creating healthier ecosystems. New research found a rise in the shark population on Ashmore Reef, ...

If you’re a shark-enthusiast, you’ve probably asked yourself: “What was life like for them before we came around?” An international team, led by UC Santa Barbara ecologist Erin Dillon, aimed to find ...

Grey reef sharks are having to abandon the coral reefs they call home in the face of warming oceans, new research finds. Scientists, using a combination of satellite remote sensing and a network of ...

A videographer captured rare drone footage off the coast of Southeast Florida this month when she recorded a hammerhead shark hunting and killing what appears to be a small reef shark. “Sharks eating ...

The feces of some algae-eating fish could be deadly to coral reefs while coral-eating fish could benefit reefs, according to a new study from Rice University. Grazers, or fish that consume algae and ...

Until recently, fish that eat coral—corallivores—were thought to weaken reef structures, while fish that consume algae and detritus—grazers—were thought to keep reefs healthy. But scientists have ...

Coral reefs all over the world, already threatened by rising temperatures brought about by climate change, also face serious challenges from the possibility of fish species extinctions. According to a ...