They might look a lot like surfboards, but standup paddleboards are different from their wave-friendly cousins in three major ways. First, and most obviously, are the paddles, which give riders a greater degree of control on the water. Secondly, a standup paddleboard can be used in almost any body of water—ocean, lake, pond, and even river. Finally, they have a much more awesome acronym. On SUP tours of Mother's Beach in Marina Del Rey, maritime adventurers can enjoy the serenity of a calm ocean surface and even see whales, dolphins, and sea lions. And if the wind does pick up, standup paddleboards convert easily to surfboards.