Seabird Watching. A 2.5-hour RIB trip from Sagres focused on the seabirds of the Costa Vicentina, led by our marine biology team. 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 #boattrips