Blog Tags: Cuttlefish
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.
This week marks International Cephalopod Awareness Days, a time to celebrate these invertebrates and bring attention to their conservation. Earlier this week, Oceana discussed octopus vision, and also recently celebrated them during Cephalopod Week. Now, Oceana is bringing attention to a lesser-known cephalopod through a Creature Feature.
Ocean Roundup: Giant Cuttlefish Decline Remains a Mystery, President Obama Creates World's Largest MPA, and More
- Federal officials say the endangered Hawaiian monk seal population may be making a slow comeback. Pup numbers have slowly increased from previous years, from 103 individuals in 2013 to 121 this year. The Dodo
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.
Of the approximately 100 species of cuttlefish, the Australian giant cuttlefish is the largest cuttlefish in the world. They can grow almost five feet long and weigh almost 30 pounds.
The coolest thing about these colossal cephalopods is their ability to change color for a number of reasons, including aggression, excitement, camouflage, or mating. They can change color so effectively that they can become almost entirely invisible when hiding among rocks and in caves. When they want to be noticed, they can put on a brilliant display of colors and flashes, particularly during the winter mating season.
- Photos: Oceana’s Dusky the Shark Visits Washington, D.C. to Raise Awareness for Dusky Sharks Posted Mon, November 17, 2014
- Ocean Roundup: Atlantic Bluefin Tuna Catch Quotas Raised, Kemp’s Ridley Turtles Stranding in High Numbers, and More Posted Wed, November 19, 2014
- Ocean Roundup: Seals Can Pick up Pings from Acoustic Tags on Fish, Climate Change Making Crabs “Sluggish,” and More Posted Fri, November 21, 2014
- Oceana’s New Report Highlights Uses, Benefits of Global Fishing Watch Technology Posted Mon, November 17, 2014
- Video: Humpback Whales Cause Quite the Surprise As They Hunt for Herring Posted Wed, November 19, 2014