Over the past two decades, jellyfish have begun to overwhelm our oceans. If things stay on their current trajectory, we could be headed for a future where the entire ocean is thick with jellyfish. So, is there anything that can keep these gelatinous creatures under control? Mariela Pajuelo and Javier Antonio Quinones take a look at the jellyfish’s most ancient predator. Lesson by Mariela Pajuelo and Javier Antonio Quinones, directed by Sinan Göksel, Emre Kanlıoğlu, Studio Big Box.