First of all, we should pay attention to safety when we come here. I heard that drug lords had come to the island and there were villas nearby. Second. You'd better negotiate a good price before you come, or you'll be in trouble. On the third island, an aquarium is OK, but it's a bit more expensive than other aquariums. You'd better prepare something to eat before you go. Near Cartagena, the archipelago is a group of small islands off the Caribbean coast. Take a ferry from the Pegasus Pier in Cartagena. There are three families on Oceanaio Island in the Rosario Islands. Lobster is sold. Better negotiate a good price ahead of time. The boat stays here. The water is clear. White sand stretches, the water is completely clear and transparent, even the water line near the beach is not a trace of turbidity, clean and unusual. Looking from the sea far away from the beach near the blue and green waters, the green waters are white sand, the blue waters are coral. The nearby aquarium performed in person. It's not very interesting.