To picture Baffin Island north of Canada's Hudson Bay, think what Alaska must have been like 70 years ago. Elders still wear skin clothing, everyone hunts to eat, and the entire 1,000-mile-long island has barely 13,000 residents.Pond Inlet, at the north end of Baffin, is twice as far from Montreal as it is from the North Pole. Summer, with temperatures still chilly enough for coats, comes in July and lasts fitfully through August. As for tourism, June is the time for floe-edge trips, July is for hiking, and August is for hiking along with whale watching, kayaking and fishing.Tim Nease of Capt. Tim's Reef Diving plans to start his first commercial Arctic dive tour next June. The estimated $4,000 price tag will include all land arrangements, camping gear and airfare from Ottawa or Montreal.You will need to bring your own drysuit and personal dive gear. And since you will be camping in winter conditions, you will need warm clothing. (Expedition-weight underwear, ski outerwear and ski gloves work well.) Regular hiking boots won't do. You need waterproof footwear (something that you could wear in ankle-deep water) with an insulated lining. Ski goggles are handy for komatik trips. And you definitely want a billed hat, sunglasses and high-SPF sunscreen. Between the 24-hour sunlight and the glare of the snow, we all fried.For more information on dive trips, contact Capt. Tim's Reef Diving, Box 1671, Islamorada, FL 33036; 877-664-0848; e-mail: [email protected]. For general information on floe -edge trips, contact Polar Sea Adventures, PO Box 703, Station B, Ottawa, ON, K1P 5P8, Canada; or Box 60, Pond Inlet, Nunavut, X0A 0S0, Canada; 867-899-8870; e-mail: [email protected] Air flies into and out of Pond Inlet four times a week. Call 800-267-1247. On a clear day, this might even include a tour of the glaciers and polar bear sighting.