Admittedly if Sakura had replied with a serious answer, Marco would have bogged at the fact that Ninja Underwater Breathing Technique actually existed.

"You have to be a dolphin to talk to whales," Marco said breezily, half running up to catch up with her. "And in case you hadn't noticed, I never said I wouldn't help." Marco grinned, in a way that he new would irritate her. "You just can't get by without me, can you?" he added, teasing.