Sandra Critelli captured captivating photos of migrating stingrays while looking for whales in the Gulf of Mexico. Her photos have circulated the world in a blast of the viral web, often without credit. She’s finally getting the credit due for her amazing photographic prowess. Her work is featured in this month’s edition of National Geographic!

These photos show an amazing, rarely seen view of hundreds of stingrays, migrating en masse.

This is nature at its finest. Imagine being in the huge expanse of the Gulf of Mexico and suddenly surprised with a spectacle like this!