Incredible Hulk (2000 series) #77

While walking the sea floor (!), the Incredible Hulk kills a white shark, and wounds an immense monster octopus. After reaching shore, the Incredible Hulk vomits the gland that made an oxygenated perfluorocarbon emulsion that allowed him to breath underwater, turns into Bruce Banner, and succumbs to fatigue. Timing was wrong, since a large two head monster comes out of the jungle to swallow our favorite scientist. A pretty gal named Gwen and a blind guy, Ripley, rescue Banner. Another monster show up but it is none other that the Gray Hulk!

Flashbacks of Banner's High School days, shown talking to an imaginative friend he (coincidentally) called "Hulk".