About one in every 4 million lobsters is born with a rare genetic defect that turns it blue.
Invasive species are bad news. They compete with native critters for food, destroy local ecology and, in some cases, are even dangerous to humans.
Photoshop's creator demos the 1990 release using a photo of his wife on the beach.
How many can you name in five minutes?
Here are five animals that made sure justice was served.