This is the 10588th most frequent French word.
marin
"Marin" in English means "sailor" or "seafarer."
The word 'marin' is used here as a noun referring to a sailor, someone who works and navigates at sea.
Le marin navigue sur les eaux calmes.
The sailor navigates on calm waters.
The word 'marine' here is an adjective and describes something related to the sea, in this case, the tint of a fish.
Ce poisson a une teinte marine magnifique.
This fish has a beautiful marine tint.
In this sentence, 'marins' is an adjective modifying sports, indicating that these sports are associated with the sea or water activities.