Hop on a boat from Hout Bay harbor for a 40-minute loop around this rocky outpost. You cannot actually land on the island, but you will get close enough to the kelp-covered rocks to smell the 5,000-plus seals. Most people bundle this with a Cape of Good Hope day tour. Pick a glass-bottom boat if you want to see them diving underwater. Wear a windbreaker and prepare for choppy Atlantic swells.
