The two crossword solutions for the term 'Sea Nymph of Greek Mythology' are NEREID (6 letters) and Calypso (7 letters). Nereids were sea nymphs in Greek mythology, daughters of the sea god Nereus. They were often associated with the protection and well-being of sailors and fishermen. Calypso was a nymph in Greek mythology who lived on the island of Ogygia. She was known for her beauty and her singing voice, and she famously detained Odysseus for seven years.