Vlaho Bukovac, Andromeda (Detail), 19th/20th Century
The “immortal” jellyfish is a small species called the Turritopsis dohrnii that is capable of repeatedly transforming from “old” to “young,” giving it the potential to be biologically immortal. Source
Les raboteurs de parquet (The Floor Scrapers) (1875), oil on canvas, Musée d’Orsay, Paris | artwork by Gustave Caillebotte
This piece was chastised when it was first shown in galleries for its depiction of working class people dressed “immodestly”.