Decades of overfishing, pollution and climate change are threatening fish species at an unprecedented pace.
The World Wildlife Fund (WWF) estimates there are more than 400 endangered marine species around the world.
But reversing years of damage done to our marine ecosystem, and the way people eat is difficult to do.
The results show sustainable fishing matters. But, there are some parts of the world where more support is needed.
Here’s what you need to know in 90 seconds.