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Deep Sea Comes to Light: Blackwater Diving Reveals Hidden Life
7 Jun
Summary
- Blackwater diving explores the ocean's void, revealing teeming life at night.
- Photographer Jialing Cai captures deep-sea creatures during nightly migrations.
- Her images reveal the vibrant, complex lives of midwater organisms.

Photographer Jialing Cai has illuminated the mysteries of the ocean's midwater through blackwater diving. This technique involves diving into the deep, dark ocean at night, revealing a world previously unseen. Cai's work showcases the astonishing diversity of life that emerges from the depths during the planet's largest migration of animals.
These creatures, including baby octopuses, jellyfish, and juvenile fish, rise to the surface to feed. Cai's stunning images capture their behavior in their natural habitat, offering a critical alternative to net-caught specimens, which often lack integrity. Her award-winning photography highlights the intricate beauty and complexity of these rarely encountered deep-sea inhabitants.
The diel vertical migration, as Cai learned it, is a daily phenomenon where trillions of organisms ascend from the deep sea. This event, occurring in all aquatic environments, is the largest migration by biomass on Earth. Cai's work provides vital evidence, showcasing the diversity and fragility of this crucial part of ocean ecosystems.