Isle Royale Boats operates the Sea Hunter III, offering both day trips and overnight ferry service from Grand Portage, Minnesota to Isle Royale National Park. Day trips allow visitors to step foot on the island, explore shoreline trails, visit Rock Harbor, and experience the wilderness of Lake Superior without committing to a multi-day backpacking trip. The crossing itself is part of the experience — a scenic journey across open water with views of the island slowly emerging on the horizon.