Carmen has been involved in fieldwork and scientific expeditions across the globe. She has participated in projects to monitor seagrass meadows in Cádiz Bay and Neguanje Bay, and she has conducted research on seagrasses in Spain, Australia and Indonesia. Currently, Carmen coordinates a variety of fieldwork-based projects in the Ria Formosa, a coastal wetland in south Portugal.

As a certified scientific diver, Carmen has been involved in surveys to study populations of kelp forests in the Iberian peninsula and seahorses in Stratoni. Back in her years as a university student, she participated in oceanographic campaigns in the Baltic Sea, the Gulf of Cádiz, and the Gibraltar Strait. When traveling, Carmen documents as much as possible the distribution of seagrasses in the places she visits, as she did thought mini-expeditions in Iceland, Malaysia or Sweden.