UNITED NEWS INTERNATIONAL (UNI) — Every year, scientists find thousands of new species of plants, animals and microbes from around the world.

But the International Institute for Species Exploration likes to put together a list of its 10 favorites which it then releases every May.

Allow us here at United News International to introduce you to a few of them.

First, we have a single-celled protist named Ancoracysta twista found at a San Diego aquarium.

It moves using a whip-like tail and preys on other protists using harpoon-like structures.

There’s also the Atlantic forest tree which can grow a towering 40 meters tall.

Even extinct species can make the list, like a marsupial lion from Australia. Fossils suggest it lived 23 million years ago and ate meat and plants.

Last, but not least, is the Tapanuli orangutan of Sumatra. Only 800 are thought to exist, making it the most endangered great ape in the world.