Final answer:
The category of the ecosystem service mentioned in the question is cultural services, which refer to the benefits that people obtain from marine ecosystems, such as recreational, esthetic, and spiritual benefits.
Step-by-step explanation:
The category of the ecosystem service mentioned in the question is cultural services.
According to the information provided, cultural services refer to the benefits that people obtain from marine ecosystems, such as recreational, esthetic, and spiritual benefits. These services are non-material and enhance human well-being and quality of life.
For example, in the case of oysters, they contribute to all four service categories, including cultural services, by providing opportunities for recreation (like oyster harvesting and fishing traditions), esthetic enjoyment of coastal areas, and spiritual connections to nature.