![]() Like other cephalopods, cuttlefish are masters of disguise. Filmmaker and biologist Shane Siers captured the cryptic creature in Puerto Galera, Philippines. But don’t be fooled by its beauty-this flashy cephalopod could be deadly. The flamboyant cuttlefish performs a hypnotic dance across the ocean floor. Unlike many human toddlers, they can even pass the marshmallow test : A 2021 study found cuttlefish can will eat less food earlier if they know they will be rewarded with shrimp, their favorite treat, if they wait. ![]() They can count and can remember what, where, and when they last ate a memory trait once believed to be unique to humans. IntelligenceĬuttlefish have a large brain-to-body size ratio-among the biggest of all invertebrates-which makes them incredibly intelligent. The cuttlefish’s beak, located at the base of its arms, is sharp enough to break hard crab shells. These predators feed on fish, crabs, prawns, smaller cuttlefish, and shrimp, using extendable tentacles to grab prey which they immobilize with a toxic bite. They can also move using jet propulsion: filling their body cavities with water then forcefully squirting it out to propel themselves backward. By adding different amounts of liquid or gas into tiny holes within this structure, these animals can change their buoyancy, making them float up or down. The mantle-the area behind the eyes which contains the cuttlefish’s internal organs-is surrounded by a fringe-like fin that flaps in a rippling motion for maneuvering.Ĭuttlefish control buoyancy using an internal shell called the cuttlebone. These cephalopods (which means “head foot”) have eight arms and two long tentacles attached directly to their head. While most live in shallow waters, some species can be found at depths of more than 3,000 feet. The more than 120 different species of cuttlefish are usually solitary animals and can be found in oceans all around the world. Despite being colorblind, cuttlefish also have highly sophisticated color-changing abilities. These fascinating creatures can count, exert self-control, and have numerous wily tactics to evade predators, including creating their own body double from a cloud of ink. The UK government said it has "some of the strongest protections in the world" for animals.Despite their name, cuttlefish are not fish but intelligent invertebrates related to the octopus, squid, and nautilus. He also said people should now be trained so they know how to kill these animals humanely. This means the end of inhumane practices like boiling lobsters alive. He said the new law means the fishing, retail and restaurant industries must change the way they treat and kill these creatures. He said the research showed strong evidence that octopuses and lobsters are sentient. He said some sea creatures experienced pain and had feelings more than others. Researchers at the London School of Economics (LSE) looked at 300 different studies to reach their conclusion that octopuses, squid, cuttlefish, crabs, lobsters and crayfish have feelings.ĭr Jonathan Birch, a professor at the LSE and a researcher on the Foundations of Animal Sentience Project, commented on the research. Being "sentient" means being able to feel things like pain, distress and joy. This recognizes that all animals with a spine are "sentient beings". The research is part of the UK's Animal Welfare Bill. The studies could change how people treat and kill these creatures. government is looking at research that accepts that sea life like lobsters, octopuses and crabs feel pain. ![]() ![]() They will no longer be able to boil seafood alive. Try the same text at a reading speed of 200 words per minute.Ĭhefs in the United Kingdom may soon have to change their cooking methods.
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