MIT built a robot fish that can explore coral reefs in the name of science

Coral reefs are in big trouble. A combination of climate change and humanity's inability to clean up after itself has devastated a huge amount of reef coverage, which also happens to be the habitat of many fish and other aquatic animals. If we lose the reefs we destabilize the entire ocean ecosystem, and the effects won't just be felt by sea creatures. In these dire times it's important for scientists to be able to monitor the condition of reefs and the animal populations that rely on them, but ...