19th century Italian coup - Poseidon

This stunning earthenware Italian coup dates from the nineteenth-century and is decorated with stormy ocean scenes with Amphitrite and Poseidon holding his trident with dolphins. The handles are like mermaid figures. 

Extract from Britannica:

Poseidon chose Amphitrite from among her sisters as the Nereids performed a dance on the isle of Naxos. Refusing his offer of marriage, she fled to Atlas, from whom she was retrieved by a dolphin sent by Poseidon. Amphitrite then returned, becoming Poseidon's wife; he rewarded the dolphin by making it a constellation.