Hi Wossa,
Sorry about the delay, but here's the scoop on Lake Ontario....
LENGTH: 193 miles / 311 km.
BREADTH: 53 miles / 85 km.
AVERAGE DEPTH: 283 ft. / 86 m
MAXIMUM DEPTH: 802 ft. / 244 m.
VOLUME: 393 cubic miles / 1,640 cubic km.
Somehow, I've never made it to the deepest bottom LoL!
The Great Lakes are world known, for the huge number of wrecks, especially the St. Lawrence River, where I did my advanced last summer...
There are dive shops all up and down the lake, so after Mexico, your next trip will have to be to Canada!
(bring a bigger wetsuit!!!)