Mergellina

Mergellina (Neapolitan: Margellina) is a coastal district of the city of Naples, Italy. It is located in the quartiere of Chiaia. It stands at the foot of the Posillipo Hill and faces the Castel dell'Ovo. The name derives from mergoglino, a local name for the smew, others believe it is a corruption of Mare Giallo ("Yellow Sea"), which would refers to when the sea turned yellow due to floating tufa rock dust following an eruption of the Vesuvius. However, very likely the real origin of the name is from Latinmare ialinum, which stands for "clear, transparent sea".