This is the 14405th most frequent German word.
karibischen
"Karibischen" means "Caribbean" in English.
Here, 'karibischen' functions as an adjective, describing the islands. It is in plural dative form due to the preposition 'in die', which governs this grammatical case.
Ich träume von einer Reise in die karibischen Inseln.
I dream of a trip to the Caribbean islands.
In this sentence, 'karibischen' again functions as an adjective, describing 'Gewässer' (waters). It is in plural nominative form as it describes the subject of the sentence.
Die karibischen Gewässer sind bekannt für ihre türkisfarbene Schönheit.
The Caribbean waters are known for their turquoise beauty.
Here, 'karibischen' is used as an adjective describing 'Landschaften' (landscapes). It takes the plural genitive form because it follows 'der', which governs this grammatical case.