sea ​​urchin

Besides the strange shape, the way of reproduction and development of sea urchins is also very special, because they possess the technique of 'turning from the inside out to

The coastal ecosystem from the US state of California to Oregon is facing the purple sea urchin 'army', with the number of urchins increasing by more than 10,000% since 2014, which

A new study confirms that the sea urchin's bristling body acts as a large eye covered with thorns.

In New Zealand, the most lonely bird on the planet - the Nigel Sea is dead. Metro edition reported on the death of the sea.

Scientists know that sea urchins (also known as prickly urchins), one of the invertebrate groups, have no eyes or any organs like eyes.

In the breeding season, hundreds of thousands of sea urchins often return to Bass Rock Island, making it one of the largest concentration places in the world.

The sea accounts for 71% of the earth's surface area (361 million square kilometers), so the marine flora and fauna is as rich as the land, even more diverse. Photographing

Sea urchins are large white and black seabirds with yellow heads, long pointed wings and long beaks. They hunt fish by diving from the air into the sea and chasing domestic prey.