Genus
Thetys
Thetys vagina. Photo: (c) Stefanie, some rights reserved (CC BY-NC)
Thetis (/ˈθɛtɪs/; Greek: Θέτις ), is encountered in Greek mythology mostly as a sea nymph or known as the goddess of water, one of the 50 Nereids, daughters of the ancient sea god Nereus.