Advice on Diving in United States

... class saltwater scuba diving sites in the United States are primarily in Florida, California and Hawaii. North America's summer months between late May through early September are the best times to take advantage of the warm waters of the Gulf of Mexico and the Atlantic, whereas the Pacific Ocean off California stays fairly cold year round and requires at least a wet suit if not a dry suit. In contrast, Hawaii has a temperate, steady climate ideal for diving year round. Saltwater diving off the Florida Keys near Key Largo is the most easily accessible and popular diving in the United States...