Carate, Osa Peninsula, southern Pacific Coast of Costa Rica. Corcovado national park is about 3 kms walking down this beach. Here´s a nice feature on the area on this month´s Travel and Leisure. http://www.travelandleisure.com/articles/exploring-costa-ricas-osa-peninsula
Watch whales or dolphins, snorkel at Molokini or Lana'i, enjoy a relaxing sunset cruise or go stargazing at night at sea. You'll find an ocean cruise to suit your style of adventure with Pacific Whale Foundation's many choices of ocean eco-adventures. The best part is that 100% of the profits go to supporting research, education and conservation programs on behalf of whales, dolphins and the ocean environment.