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This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American “Period Rock? You’re calling me Period Rock ...

The sea holds some of the world’s most interesting creatures – but this “living rock” is one of the strangest we’ve ever seen. Pyura chilensis is a non-moving sea creature that lives along the coasts ...

You will be surprised to see this strange sea creature which looks like a living rock. The images of the same have amused a lot of people online, the rock is actually a bizarre creature and it can ...

The most common guesses include a geode, a misshapen pomegranate, and a “period rock.” But all these guesses are wrong. Scientific American’s Becky Crew explains that this bizarre-looking specimen is ...

I’m eating a turkey and swiss sandwich right now, and I’m watching this video. Please don’t do as I do. Learn from my mistakes. This sea creature, the Pyura chilensis, lives off the coasts of Chile ...

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This is not a geode. It's an animal. An apparently delicious animals with clear blood, whose body is accumulates surprisingly large amounts of a rare metal used to strengthen steel. This is Pyura ...

“Period Rock? You’re calling me Period Rock now? Guys, seriously, I might look like a stone, but that doesn’t mean I have the heart of one. Why doesn’t anyone ever just call me Michael?” Despite ...

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