Get to know the crown of thorns starfish, which grows to two feet wide and wields toxic spines that will definitely ruin your day.
The oceans have been acting weird lately. While some sea creatures have boomed (octopuses), others have busted (humpback whales), and yet others literally melted into goo (starfish). Whether the causes are El Niño or the “Blob” or ultimately climate change, these events point to just how interconnected and poorly understood the ocean ecosystem is—how little of it observable by humans. A marine biologist who studies whales once likened finding a beached one to finding a specimen of a “space alien.” The sea is dark and full of mysteries.