A vast bloom of toxic algae is killing more than 200 species of marine life off the southern coast of Australia. The algae, Karenia mikimotoi, appeared in waters around South Australia in March, causing mass deaths in species including sharks, rays, crabs, and octopuses. Carcasses are littering the beaches of Kangaroo Island, Yorke Peninsula, and Fleurieu Peninsula, affecting tourism. The toxic algae bloom stretches across 1,700 square miles. California recently suffered a toxic algae bloom which killed thousands of sea creatures. Pollution, plastics, and global warming are destroying our oceans.