kb Lassen 03 Voyage of the Hookulea Christian Riese Lassen

The picture has something of this: underwater, fish, coral, ocean, sea, reef, water, aquarium, diving, nature, tropical, snorkeling, swimming, marine, exotic, deep, bottom, turquoise, jellyfish.
Perhaps it’s a painting of an underwater scene with a turtle, fish, corals, and other marine life in blue water with a mountain in the background.