If you have even the slightest interest in nature or biology, you will love The Encyclopedia of Life. It is an attempt to put all the world’s taxonomy data in one easily searched location. Presumably they will one day attach the full genome of each critter as well!
Oh how I wish I had this available when I was a kid. I knew just about everything that walked, crawled, slithered, swam or flew in Western Pennsylvania and was working away at the rest of the world when I was 14 or so!