Counting All the Fish in the Sea May Be Even Trickier Than Scientists Thought

Counting the number of fish in the ocean may well be one of science’s toughest jobs. It also produces a crucial tool governments use to protect marine ecosystems that feed millions of people across the world.Fish stock assessments work a lot like climate models. Scientists gather a wide range of data from fish catches, like age and weight, and track environmental conditions, like the temperature of the sea, and…