Super Blue Watermelon
From the Super Mario Wiki
(Redirected from Special Blue Watermelon)
Super Blue Watermelons (also called an Ice Watermelon) are cold and frozen blue Watermelons (with blue skin, red flesh, and black seeds) found in Super Mario World 2: Yoshi's Island and its remake Yoshi's Island: Super Mario Advance 3. If a Yoshi eats it, he will be able to breathe three blasts of ice. The ice can freeze enemies solid, which can then be smashed to pieces.