Stubbs Island is a popular diving destination for those who enjoy exploring the enchanted beauty of the underwater world. Its narrow ledges hold a variety of abundant, colourful marine life that only a few are fortunate to witness.

Stubbs Island is also a popular destination for the many humpback whales that frequent the waters of Northern Vancouver Island. These gigantic mammals can reach lengths of 15 meters long and weigh up to 40 tonnes. The humpback whale was once the primary target for the local Coal Harbour commercial whaling station. They were hunted extensively until 1964 when whaling this species was banned. Over recent years, these whales have now begun their return and are frequently viewed feeding around the waters off Stubbs Island.