An "archipelago" refers to a group or chain of islands that are closely located together in a body of water, such as the ocean or a lake. Full definition
You might think that polar bears — and the potential for attack — are the biggest danger the Norwegian arctic island archipelago of Svalbard. (sciencedaily.com)
Located on the island archipelago of Svalbard, the town's temperatures were ridiculously warm back in January 2012. (natureworldnews.com)
A lonely Hindu enclave in the predominantly Muslim Indonesian archipelago of 17,500 islands, its unique variant of faith is a composite of Indian cosmology, Tantric Buddhism, local animist traditions and ancestor worship. (blog.baliwww.com)