A seven-arm octopus was spotted in Monterey Bay in Nov. 6, 2025; the 'rarely seen' deep-sea octopus was spotted by researchers who've only seen it four times in nearly four decades.

Out of sight from visitors and school field trips, Birch Aquarium in La Jolla is quietly raising more than 3,000 tiny octopus ...

Scientists have discovered at least four new species of octopus in the deep waters of a 100-square-mile area near Costa Rica, officials from the Schmidt Ocean Institute said on Tuesday. An ...

POULSBO — Four years after the last Giant Pacific Octopus at the SEA Discovery Center was released back to the sea, the marine science center in Poulsbo has plans to bring one back. SEA will work with ...

Deep under the sea, a real-life master of disguise lies in wait — take a look at the Mimic Octopus (Thaumoctopus mimicus), nature's ultimate chameleon. It can change shape to resemble many sea ...

Two miles below the ocean surface off Monterey, California, warm water percolates from the seafloor at the base of an underwater mountain. It’s a magical place, especially if you’re an octopus. We now ...

The deep-sea octopus is "rarely seen," per the Monterey Bay Aquarium Research Institute, which has only seen it four times in four decades Researchers collected detailed observations about the octopus ...