After three years of monitoring the area, researchers found the site is a popular mating and nesting ground for pearl octopuses, where hot springs help embryos develop twice as fast than expected at this depth.
The faster development increases a hatchling’s likelihood of survival through the brooding period, according to a study released Wednesday in the journal Science Advances.
For more than two decades, researchers have been studying an extinct underwater volcano called the Davidson Seamount. The seamount, located around 80 miles southwest of Monterey, Calif., is one of the largest seamounts in the world and known for its beautiful deep sea corals. It is also one of the most well-studied seamounts in the world, so when DeVogelaere wanted to explore it further, others were skeptical he would find anything new.
They had found the “octopus garden,” home to at least 6,000 nesting, Muusoctopus robustus - commonly known as pearl octopuses. The researchers estimate there could be 20,000 in this nursery. “As you get into colder waters, whether it’s polar waters or deeper waters, colder water slows down metabolism, slows down metabolic rates, slows down growth and embryonic development rates,” Barry said. “We think that the warm water is providing some sort of reproductive benefit for them.”
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