This is called Flight of the Rays by Florian Schulz (Germany). This aerial view of a congregation of Munk’s devil rays was taken over the Sea of Cortez, Baja California, Mexico in 2010. He won Environmental Photographer of the Year.
The Lions Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago) and are among some of the oldest surviving species in the world.
The largest can come in at about 6 meters and has tentacles over 50 meters long. Pretty amazing when you think these things have been swimming around for so long.