"We did the 09am tour. They help get you in the water and guide you on a nice hour tour down to Benagil caves stopping by various other caves along the way. The sea was pretty calm and it was easy to paddle and get there. You stop in the Benagil cave for a bit and explore before getting towed back. You can make a reservation online but pay in cash so bring it. Don't bring clothes you plan on keeping dry as youll probably get wet and splashed. Enjoy!"