Ice watermelon

Ice Watermelons are blue, cold Watermelons in Super Mario World 2: Yoshi's Island. If a Yoshi eats it, the Yoshi will be able to shoot ice, because the Watermelon is cold. The ice can freeze enemies and they can then be smashed. In Level Special 5, Items are Fun!, Yoshi had to freeze two Tap-Taps and leap off them to access an otherwise unreachable area.