Cruise down the Murray River to see Prince Edward Island's largest seal colony. The wildlife sanctuary here is home to hundreds of seals and you'll also have the chance to see other wildlife as well. The waters tend to be smooth here so you'll have less chance of getting sea sick than on the open ocean.
Book a seal watching boat tour from one of the commercial operations on Prince Edward Island. A number of companies offer seal tours by boat and you can locate one by contacting a local tourism office. The eastern part of Prince Edward Island offers larger colonies than elsewhere.
Rent a canoe or kayak and create your own seal tour. Ask locals or boat shop owners about the best places to go to see seals and never take on more than your skill level permits. Always give wildlife, including seals, plenty of space so that you don't disturb them.
Check with visitor's centers and tourism offices around the province for advice on where to spot seals. Many times, you can find smaller groups along the coast at various points. Locals will know where seals generally are and the best places to watch them from. Watching on land has the added benefit of allowing you to stay as long as you like to watch the seals.
Look along shorelines and along the coast whenever you're near the ocean and you may spot some seals. Sometimes you'll see a small group of seals when you're least expecting them. So when you're out for a scenic drive or hike, keep your eyes open for seals on land or in the water nearby.