In 2020, about 600 meters (2,000ft) down in an underwater canyon off the coast of Western Australia, scientists encountered a long gelatinous creature suspended in a giant spiral. “It was like a rope on the horizon. You couldn’t miss it,” says Nerida Wilson from the Western Australian Museum.“It was so huge.”
A New Species ?It was a deep-sea siphonophore, a relative of the Portuguese man o’ war, or blue bottles that bob like party balloons on the sea surface,...