Most complex organisms have a permanent hole for excreting waste. (Though there are exceptions, like the warty comb jelly, which forms an anus only when nature calls.) In bipeds and quadrupeds, the ...

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Most carnivores have teeth to grasp and eat prey, so marine animals with teeth are not uncommon. Sharks, dolphins, eels, whales, many fish species, and marine mammals like seals and sea lions have ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment.View full profile Rachael has a degree in Zoology ...

For the first time ever, marine biologists have measured how much energy octopuses really need to change color — and it's a lot. When you purchase through links on our site, we may earn an affiliate ...

Octopuses aren’t just flexible—they’re astonishingly strategic. A new study reveals how their eight arms coordinate with surprising precision: front arms for exploring, back arms for locomotion, and ...