You're likely to hear this dazzling South American parrot long before you see it. It's well known for making loud throaty squawks, squeaks, and screams.
Instantly recognizable, the biggest cat on the planet is a popular and charismatic beast. Sadly, it's an endangered species, with poaching and habitat loss blamed for declining numbers.
The clownfish is found in the colder waters of the Indo-Pacific regions and the Red Sea, where shallow seas and sheltered reefs are its preferred hangouts.
Despite its unique transparent wings, the South American glasswing makes this list because it "appears" to achieve coloration by virtue of its see-through wings. Clever!