Hana is a fourteen-year-old girl who loves to swim, snorkel, dive and hold her breath underwater. She is always dressed in a black long-sleeved full-body rubber wetsuit, a pair of blue swimming goggles, a pair of black rubber gloves, a teal swimming cap, a pair of black flippers and a pair of black nose-clips. She has a little seven-year-old sister called Heidi, who always wears a blue long-sleeved full-body rubber wetsuit, a pair of magenta swimming goggles, a pair of blue rubber gloves, a pink swimming cap, a pair of blue flippers and a pair of blue nose-clips.