It’s June in the Gulf of Mexico, and Sandra Critelli is on a boat close to Holbox Island. In particular, she’s headed there to try to find whale sharks; Critelli is a photographer, and she’s hoping to snorkel with the biggest fish in the ocean, taking pictures as she does so. However, she then spots something on the horizon that takes her breath away.
In a sense, she’d seen something even larger than the whale sharks she was hoping to find. And the boat was turned in order to best capture the phenomenon playing out in front of Critelli. Then the engine was shut off, and one of the most remarkable sights in nature slowly made its way past.