@natgeo
National GeographicOceanic manta rays are among the largest fishes in the ocean, but nobody knows where they go with their rare and infrequent pregnancies. This footage—depicting one of the first recorded contactless ultrasounds confirming pregnancy and observing the developmental stage in wild oceanic mantas—is helping unravel the mystery. By identifying and tracking expectant mothers, marine biologists hope to better understand the vulnerable species' slow reproductive cycle and how to better protect them. Learn more about this incredible moment at the 🔗 in bio.
On the profile · Jun 19, 2026