For as beautiful as Flamenco is, I might even rank Culebrita as higher on my list. Many Culebra locals have a boat and for about $50/pp can take you to the island for about five hours.
They usually provide snorkeling gear, maybe some snacks. It's a standard package around the island. You'll be dropped off at the mangroves, climb the hill to explore the dilapidated lighthouse, then snorkel (some of the most amazing snorkeling here) for a while. You can then head to Tortuga beach to relax for a while, basking in the lucid milky-blue waters with a handful of yachts (on a busy day) anchored around you.
I recommend going with David, who also tends bar at Club Seabourne Hotel. He'll give you a very friendly and personal experience.
Own or manage this property? Claim your listing for free to respond to reviews, update your profile and much more.