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Marine Species Traits - Merga violacea (Agassiz & Mayer, 1899)
Hydrozoa - The World Hydrozoa Database - Merga Hartlaub, 1914
UNESCO-IOC Register of Marine Organisms (URMO) - Merga …
Hydrozoa - The World Hydrozoa Database - Mergintha Hartlaub, …
Register of Antarctic Species (RAS) - Merga Hartlaub, 1914
MarBEF Data System - ERMS - Merga Hartlaub, 1914