Careful planning and an experienced boat captain are key to this dive site. Seymour Narrows can experience tidal currents up to 15 knots so you must have experience diving in currents and recognize when its time to surface. Marine life in the Narrows must be able to sustain the strong currents so creatures that reach out to grab plankton have to choose a spot where they can hold on tight. There are Bull Kelp forests close to the shoreline that appear only during the slack in the current and are pulled below the surface the rest of the time. Fish life is restricted to hollows and crevices in the rocks. Invertebrates like Crimson, Painted and Brooding Anemones with their strong suction base can stand the pull of the moving water.