My friends and I found a unfamiliar specie and wanted to know if we discover a new living thing.

You've not given us much to go on!

If you have a specimen of this organism that you think may be a new discovery, you should take it to your local museum -- somewhere there will be able to advise you, and judge whether it's sufficiently likely to warrant further investigation.

If the organism is still in its natural habitat, then take photos, and show them to the local museum.