It is called an archipelago.
The general term is "island chain." The term for any group of related islands is "archipelago."
an archipelago
The Outer Banks of North Carolina (and Virginia) are a long chain of small barrier islands out from the coast.
The name for a cluster or chain of islands is "archipelago". (More technically, it would apply to a chain of islands like Hawaii, which are all formed from the same tectonic / volcanic source.)
The collective nouns for islands are aconstellation, string, group, cluster, or a chain of islands.The term "archipelago" refers to a group of islands in the one location, under a common name. A different term is "island chain" where a long group of islands projects into the sea, typically from a peninsula.
Aleutian Islands
The long chain of islands that separates the Caribbean Sea from the rest of the Atlantic Ocean is known as the Caribbean Islands. This island chain includes Cuba, Haiti, and the Dominican Republic.
amino acids form a chain called a polypeptide chain and form a protein
amino acids form a chain called a polypeptide chain and form a protein
The islands of the long chain that extends from the Alaska Peninsula are the Aleutian Islands, named for the native Aleut tribes that still inhabit the state.
The Near Islands and the Islands of Four Mountains are groups of small islands within the Aleutian Islands (the "tail" of the Alaska Peninsula). The Near Islands are the westernmost in the Aleutian Island chain.
A polypeptide chain that eventually is formed into a protein