Amazing Activities: Cartagena Marina
The marina in Cartagena is, of course, the place to reach for any island trip. It is relatively well organized. Be simply aware of one thing : arrive in advance for any boat trip, as, on top of the small security screening, it is necessary to pay a small travel tax (about 5000COP per person) at an office, even if boat tickets are already paid.

Cartagena Marina - Boat ready to leave