When I first read about trovants, I couldn’t believe they were real. They sounded like objects Captain Kirk and his crew would discover on an alien planet. Strange rocks that grow when it rains and move from one place to another without any assistance. Totally sci-fi, right?

As I kept reading about them, I discovered that trovants aren’t a part of science fiction, they are just an amazing geological phenomena. These stones seem to grow as if they are alive, even though they’re not. They are found in the small Romanian village of Costesti. The word ‘trovant’ is a synonym for the German term “Sandsteinkonkretionen” (try saying that really fast), which means ‘cemented sand’.

Cemented sand – that’s a strange name for a rock, isn’t it? But that’s what trovants are – spherical shapes of sand that appeared on earth after powerful seismic activity. In fact, the earthquakes that brought these strange rocks into existence are said to have occurred 6 million years ago. Trovants grow when they come into contact with water. Stones as small as six to eight millimeters end up as large as six to ten meters. Some of them even move on their own. When cut, trovants reveal spherical and ellipsoidal rings, similar to tree trunks.

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Pyura chilensis doesn’t look like much from the outside. You could pass right by a colony without realizing they’re more than just simple beach rocks, but cut them open and you’ll think you’ve discovered a real bizarre-looking alien specimen.

Popularly known as the living rock, Pyura chilensis is actually a weird sea organism that lives on the rocky coast of Chile and Peru. It feeds by inhaling the sea water and filtering out edible microalgae through a pair of siphons. It has clear blood and can accumulate high quantities of a mysterious and rare element called vanadium. It’s been discovered that the blood of the Pyura chilensis contains 10 million times more vanadium than the surrounding sea water, although it’s role in the creature’s development is yet unknown. The alien-like organism is born a male but also grows female organs over time, and breeds by releasing both eggs and sperm that meet in a fertile cloud and form tiny tadpole-like offsprings that eventually settle on nearby rocks and grow into adult form. This is all very unique and fascinating, but there’s really nothing quite like seeing one of these bizarre creatures sliced in half. The Pyura chilensis is covered in a thick layer of tunicin that helps it blend in its surroundings, but underneath lies a bright red tissue-like mass that leaves first-time viewers flabbergasted.

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River rocks may not seem very interesting to you, but once you see what Italian rock painter Ernestina Gallina can do with them, I’ll bet you’ll see them in a new light.

Ernestina Gallina, from Cenestino, Italy has had a thing for the arts ever since she was just a child. She loved painting, drawing and modelling, but because her family never encouraged her to develop her skills, she never attended art school and she only exercised her artistic talents as a hobby. In 1987, she and her family moved to Nairobi, Kenya, where she discovered a yet unknown world – that of nature and animals. Then, one day at the library, she stumbled upon a book on rock painting, and became intrigued about how simple river stones could be transformed into nature-inspired works of art. It gave her the chance to combine her passion for the arts with her love of wildlife, so she started rock painting and never looked back.

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