4 words in this vocabulary list
noun a community of living organisms that live in close association with coral reefs
noun a very large marine mammal with a streamlined body and a horizontal tail fin, breathing air through blowhole(s) on the top of its head
noun Acanthopteri - a taxonomic group of spiny-finned fishes including the perch and bass
noun a taxonomic group of ray-finned fishes characterized by the bony rays in their fins