WASHINGTON, D.C.: Most octopuses lead solitary lives. So scientists were startled to find thousands of octopus huddled together, protecting their eggs at the bottom of the ocean off the central California coast.
Now researchers may have solved the mystery of why these pearl octopus congregate: Heat seeping up from the base of an extinct underwater volcano helps their eggs hatch faster.'There are clear advantages of basically sitting in this natural hot tub,' said Janet Voight, an octopus biologist at the Field Museum of Natural History in Chicago and co-author of the study, which was published Wednesday in Science Advances.
Only the hazy shimmer of escaping hot water meeting the frigid sea alerted the researchers to the hydrothermal seep. But they still didn't know exactly why the octopus had gathered there.For three years, scientists monitored the site to understand the hatching cycle, recording both the developmental stage of eggs at 31 nests and the inevitable deaths of octopus moms.
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