Wings, fins, flippers – what kind of flappy appendage would your alien have?

Flap-like appendages are an essential feature for many animals and plants, enabling them to move and thrive in their environments. If your planet has oceans, your alien may use fins to swim and steer in the water. If your planet has a sufficiently dense atmosphere, your alien may have evolved wings to fly and soar through the air. Some animals use flaps to scare off predators, like the Frill-Necked Lizard, which puts on a great show with its frilly membrane. Even some plants, like the Venus Flytrap, have flap-like leaves that snap shut to catch insects. Whether it’s for movement, predation, or survival, flap-like appendages are a remarkable adaptation in the natural world!