lagoona shallow body of water separated from the sea by a sandbank or coral reefThe lagoon's warm, sheltered waters provide an ideal habitat for juvenile marine species.NoteThe lagoon's warm, sheltered waters provide an ideal habitat for juvenile marine species.Elon.io is an online learning platformWe have an entire course teaching IELTS Vocabulary — Band 7+ grammar and vocabulary.Start learning IELTS Vocabulary — Band 7+ now