Dolphin and Benagil Caves Tour. A combined boat trip from Portimão pairing dolphin watching with a visit to the Benagil Cave and coastal caves. Every operator on the Circle is booked direct. No commission, no middleman, no booking fee stacked on top: you deal directly with the people who run it. Reserva direta com quem opera, sem comissões e sem intermediários. #algarve #algarvecircle #portugal #thingstodoalgarve #dolphinwatching