We often hear people talking about venomous and poisonous animals, so you’d easily be forgiven for thinking that they mean ...

Highly venomous male octopuses poison females before sex — to avoid being eaten after mating, scientists say By . Brooke Steinberg. Published March 14, 2025, 3:43 p.m. ET.

Average Size. 0.75 to 1.25 inches, weighing less than one gram. Found where. In the US, they are most common on the Atlantic and Gulf coasts, but they can be found in most states.

Amazon Prime Video's "Octopus!" is a two-part documentary special narrated by Phoebe Waller-Bridge, premiering May 8 Prime Video/YouTube Octopuses are amassing fans for their quirky ways. The ...

The venomous blue-lined octopus is one of many species that engages in sexual cannibalism. Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent every weekday.

The team followed the octopuses for 13 hunts, during which they observed groups of between two and 10 fish working with each octopus. These hunting groups typically included several species of ...

Picture an octopus that could be deadly to humans. You’re probably thinking of a large creature, and not one that is the size of your palm. But indeed, that’s the blue-ringed octopus, one of several ...

The blue-ringed octopus and Antarctic octopus are the two most deadly octopuses for humans when it comes to their venom, says Oregon State University. Meanwhile, the world’s biggest ...

Blue-lined octopuses are tiny, measuring just six inches across, but their venom packs a serious punch. Their salivary glands are full of symbiotic bacteria, which pump out a deadly poison called ...

The octopus just revealed another one of its secrets: what determines its sex. University of Oregon researchers have identified a sex chromosome in the California two-spot octopus. This chromosome ...

Squid, cuttlefish and octopuses, like this California two-spot octopus, use specialized proteins in their suckers to “taste” with their arms.

The octopus is one of the coolest animals in the sea. For starters, they are invertebrates.That means they don’t have backbones like humans, lions, turtles, and birds. That may sound unusual ...