A wave of dead fish, birds and reptiles has washed up along the canals and beaches linked to Madre de Dios Lagoon, signaling a fresh environmental crisis in this key biodiversity zone on Costa Rica’s ...

Over the summer of 2015, 40 million mangroves died of thirst. This vast die-off—the world's largest ever recorded—killed off rich mangrove forests along fully 1,000 kilometers of coastline on ...

A massive fish die-off at Laguna Niguel Regional Park has prompted officials to investigate the cause. Orange County Fifth District Supervisor Katrina Foley said the die-off was mainly bass and was ...

A mass fish die-off in Brazil’s Amazon River region has killed an estimated 20-30 metric tons of fish and other aquatic animals, following one of the worst droughts in Amazonian history. On the night ...

Without sea stars, an explosion of sea urchins knocked the ecosystem off balance. Now scientists are racing to breed a new generation of their predators. An ochre sea star tries to blend into a kelp ...