On a featured SCUBA dive at Yasha Island in Alaska's Inside Passage included a large group of steller sea lions swarming around and generally being very curious to see who had visited their underwater realm.
SCUBA diving in Alaska is a truly remarkable experience. The variety of colorful marine invertebrates can rival even the healthiest tropical reefs. Here, the dead man's finger sponge and the octo coral, Gersemia rubiformis, cover the rocky reef off the Inian Islands at the north end of Baranof Island and Glacier Bay.
Nudibranchs, or sea slugs, are a diver's delight. They come in a myriad of colors and patterns, but this white nudibranch is stark against a black background.