Genetics: Eternity x Yellow Mermaid Description: Eternity x Yellow Mermaid is a fruity strain with hints of menthol and earthy herbal undertones.  Effects: The onset effects of Eternity x Mermaid is almost immediate, infused with happy euphoria and focused energy. You'll feel a deep physical relaxation that accompanies this head high followed by a relaxing body high that calms you from head to toe.