Marine heatwaves are cooking our ocean ecosystems – and will only become more common

Canva, Pixabay, The Conversation, CC BY-NC-SA You may have heard reports of fish die-offs or seen photos of hauntingly bleached coral. Those are just two signs a marine heatwave has swept through the sea. Marine heatwaves happen when the ocean remains abnormally hot for an extended period. While they may be invisible from the shore, their impacts can wreak havoc underwater – killing various kinds of coral, seagrass and fish. As climate change continues to warm the ocean, marine heatwaves will…