Oceans

This beach-cleaning robot is a Roomba for sand
Rarely seen glass octopus caught on film
Bomb detectors record rare pygmy blue whales singing
Radioactive plutonium from space found in Pacific Ocean
Transforming abandoned oil rigs into artificial reefs
Scientists brought to life 100-million-year-old bacteria
Underwater gliders could soon run off of the ocean’s changing temperatures
A massive iceberg is about to crash into an island of penguins
CRISPR could help save coral reefs from bleaching
Scientists found a coral reef bigger than a skyscraper, hidden in plain sight