Blog Tags: Octopus
Happy Halloween, ocean lovers! Today, many people are delighting in the one day of the year where they can dress up to be any figure that these please. But in the vast ocean, many species are in costume all year—dazzling bright photophores to trick prey, or changing their skin tone to blend in with their environments. The deep-sea anglerfish, for example, flashes it lure covered in light-producing cells to attract and trick prey in the cold, dark waters, while species like the firefly squid emits bioluminescent ink to also confuse predators.
If you’ve spent some time at the coast this summer, the chances are you’ve had a close encounter with a jellyfish, as these invertebrates have earned quite the reputation in the media for “invading” coastal areas and causing a “jellyfish apocalypse” in recent years.
You may have heard of the elusive vampire squid, a species that emits mucus covered in bioluminescence to trick its predators, or the dumbo octopus, the deepest-living of all the octopus species. Creepy and otherworldly as they may seem, each of these spineless creatures plays an important role in ocean ecosystems.
When it comes to sea creatures with superhero powers, the common octopus (Octopus vulgaris) might take the cake: with jaw-dropping camouflage abilities, ink, and incomparable intelligence, the octopus is every marine biologist’s dream (and every prey species’ nightmare).
This amazing video has been making the rounds on the internet for a while, be we still couldn’t resist sharing it with you! You may know that an octopus can change the color of its skin to blend in with its surroundings. But did you know they were this good?
In this gorgeous new Oceana video Alexandra Cousteau delves into Monterey Bay to illuminate the diversity of life at the bottom of the ocean, a crucial habitat that is under the constant threat of obliteration from bottom trawling. Using an ROV the camera captures an otherworldly scene, as scallops flutter by and curlicued basket stars unfurl. Armies of shrimp and brittle stars scamper by, fed by the organic matter from above that drifts down the water column like snowfall, sustaining a remarkably rich community. In shallower waters, coral gardens that take hundreds of years to blossom shelter rockfish and ingeniously disguised crabs, and serve as a nursery for dozens of species of fish. Here octopuses go camouflage against the rocky shale, out of sight of the hungry sperm whales and sea lions from above. Anemone-covered spires upwell nutrient rich waters that feed shoals of krill, which in turn feed blue whales. It is an intricately connected ecosystem and it can be destroyed in an instant by bottom trawling. That’s why Oceana has pushed for an end to bottom trawling in ecologically sensitive areas. And that work has paid off in concrete victories: in 2006 NOAA protected 140,000 square miles of Pacific seafloor from the destructive practice, but more needs to be done. For the most part this world goes unseen by human eyes and it’s why Oceana is working laboriously to document these precious areas before they disappear.
The Oceana Ranger has now been at sea for several weeks, and as usual, the crew has been sending us some incredible photos. Starting this week, I’ll be posting a photo of the week from the journey.
This week’s photo of a beautiful octopus comes from a dive the team did off Portugal’s beautiful Algarve region, in Pedra de Martinhal. As the photographer noted, this curious octopus wasn’t scared off by the camera, perhaps because it was mesmerized by its reflection in the glass.
Stay tuned for more great photos in the coming weeks, and check out the Ranger set on Flickr.
This is part of a series of posts about our Pacific Hotspots expedition. Today's highlights: octupuses, hydrocorals and nudibranchs!
California Leg, Days 4-5
Friday concluded the Monterey portion of the expedition, and we had high hopes and much enthusiasm for the last day. We successfully completed three fantastic dives exploring three unique habitats.
This section of the expedition involves two ROVs, a compact one able to capture footage in more shallow depths and one designed to dive much deeper. The crew is still making improvements to the larger ROV so we used the smaller one to document bottom habitat consisting of sand, boulders, and large white sponges inside Point Pinos reef; the pinnacles at Asilomar State Marine Reserve; and investigated marine life hiding within the ledges of the Monterey Shale Beds.
The strong swells we had been working against all week calmed a bit under the overcast sky. Special guests joining us today included scientists from the Stanford Center for Ocean Solutions, a reporter and photographer from the Santa Cruz Sentinel newspaper, and documentary filmmakers from Sea Studios.
Our dive within the newly established Asilomar State Marine Reserve was truly extraordinary. We were pleasantly surprised to see that this marine protected area contained such large pinnacles, equivalent in splendor and color to what we observed further south near Carmel earlier in the week.
National Geographic has captured incredible footage of a sea lion battling a large octopus in Australia (spoiler alert: the sea lion prevails.) To get the footage, the hungry sea lion was equipped with a GPS tracker and a crittercam.
The project, led by South Australian Research and Development Institute, is helping researchers learn more about where and how sea lions feed, which will ultimately help in protecting key habitat for the creatures. Plus, it's just a really cool video. Check it out:
- Ocean Roundup: Fiddler Crabs Found Far North of Their Range, 500 Dead Sea Lions Discovered in Peru, and More Posted Tue, November 25, 2014
- Sea Turtles Can Get the Bends after Capture in Fishing Gear, Says New Study Posted Tue, November 25, 2014
- Ocean Roundup: Dolphins Use Whistles as Names, Conservationists Call for Removal of Queensland Shark Nets, and More Posted Mon, November 24, 2014
- ICCAT Moves to Properly Manage Bluefin Tuna, but Doesn’t Take Action for Sharks and Swordfish Posted Wed, November 26, 2014
- Oceana in Chile Submits Recommendations for Lowering Common Hake Catch Quotas Posted Mon, November 24, 2014