The four Twirlywoos - Great Big Hoo, Toodle-oo, Chickadee and Chick - have adventures both in the real world, and in their boat. They learn about a new concept each episode. Shy Peekaboo also ...

When the Twirlywoos wave at the start of every episode ... If a green prop is necessary, a blue screen is used. But if Big Hoo is in the shot, his blue body would disappear!