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The Ocean Blog

Success! A so-called "dumbo" octopod is chased and finally captured by a suction device on the ROV, skillfully operated by a pilot on the ship above.
Two California market squids ( Loligo opalescens ) mate in the waters off of California's Channel Islands. While spawning, the male's arms blush red as he embraces the female, a warning to other...
Octopuses are colorblind, but manage to blend into the background seamlessly—or stand out in bright color to startle their enemies. So how do they do it? That's the question Roger Hanlon of the...
“This image was captured during an evening dive in water where the largest migration on Earth occurs nightly," said Nature's Best Photographer Joshua Lambus. The migration he speaks of is the diel...
This image from a scanning electron micrograph magnifies the tiny teeth that cover the surface of the giant squid’s tongue-like organ, or radula . Seven rows of sharp teeth help direct tiny pieces of...
The dumbo octopus ( Grimpoteuthis ) is a deep sea animal that lives on the ocean floor at extreme depths of 9,800 to 13,000 feet. They are small animals, around 8 inches tall, and have a pair of fins...
In 2012, the long-elusive giant squid was finally filmed live in its natural habitat. The squid was found by placing glowing lures outside of a submersible to mimic jellyfish, which typically...
Octopuses can change the texture and color of their skin to blend in with their surroundings. This day octopus ( Octopus cyanea ) has shaped itself like seagrass or some coral so hide from predators...
Smithsonian Zoologist Dr. Clyde Roper (rear) and museum specialist Mike Sweeney examine the mantle of a dead giant squid. Everything we know about giant squid comes from studying specimens found...
In 2006, this female giant squid attacked bait suspended beneath a Japanese research vessel off the coast of Japan in the Ogasawara Islands . This screenshot resulted when the research team pulled...
Dr. Clyde Roper discusses the fascinating anatomy of the giant squid ( Architeuthis dux) in this excerpt of "Eyeball to Eyeball," an episode of Errol Morris' First Person television series. Watch...
An adult giant squid struggles for survival in an encounter with a sperm whale - its only known predator. The whale will probably overpower and eat the squid. More about the giant squid can be found...
With a scientific name that means "the vampire squid from hell," you'd expect the vampire squid ( Vampyroteuthis infernalis ) to be a fearsome predator terrorizing the deep. Despite its demonic look...
Weighing 600 pounds (around 272kg) and having a 30 foot (around 9 meters) arm span, the largest recorded giant pacific octopus was truly enormous. Giant pacific octopuses are powerful predators that...
This is the first photograph of a live giant squid ( Architeuthis ) in its natural habitat. It was taken in 2004 by two Japanese researchers who had suspended a long line from their research vessel...
A veined octopus ( Amphioctopus marginatus ) briefly leaves its hiding spot, a seafloor shell, to devour a crab.
Dr. Clyde Roper recounts the tale of his encounter with a giant squid specimen ( Architeuthis dux) that was found washed up on a Massachusetts beach in this excerpt from "Eyeball to Eyeball," an...
The largest of the cuttlefish species, Australian Giant Cuttlefish ( Sepia apama ) delight scientists each year as they gather in masses to spawn in northern Spencer Gulf, northwest of Adelaide in...
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