Despite their similar appearance to nautilus shells, the egg cases of these pelagic octopuses are made with different genes. 💰Our editors’ picks for the best Prime Day deals.💰 Search for: ...

It takes more energy to produce eggs than sperm, ... Our No. 1 weirdest animal penis goes to the argonaut octopus, a type of nautilus. This tentacle animal swims around in the ocean, ...

The shell is often described as an egg-case, […] The argonauts are a group of octopuses unlike any other. The females secrete a thin, white, brittle shell called the paper nautilus.

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Because the argonaut still carries around a nautilus-shell-like construction, it has fueled the scientific debate about whether, and how, an animal can lose such a structure during the course of ...

For instance, no one has ever seen a nautilus egg in the wild. And while they’re believed to live about 15 years, scientists find it impossible to age a nautilus after its shell is fully developed.

That's how long these cephalopods sit on their eggs -- 53 months, a record among all animals. Like so many other deep sea creatures, G. boreopacifica have been little studied by scientists.

The Nautilus researchers determined that the animal was floating around 65 feet above the ocean floor and was likely a dumbo octopus. "It looks like a Grimpoteuthis species," one researcher can be ...

With such diverse ecosystems, animals have evolved different adaptations to survive. The octopus, or he‘e in Hawaiian, is one of those exceptional animals that thrives in our oceans today.

Finn and Norman filmed and photographed live animals in the act of trapping their air bubbles, solving a mystery that has been debated for millennia. Scientists have long wondered about the purpose of ...