In an unprecedented journey to the bottom of the world’s oceans, a highly advanced robot has broken the record for the deepest ocean dive, reaching an astounding depth of 10,900 meters in the Mariana ...

A Chinese submersible has discovered thousands of worms and molluscs nearly 10 kilometres (six miles) below sea level in the ...

The Challenger Deep, which is named after the British Royal Navy survey vessel HMS Challenger, has a maximum depth of approximately 10,984 meters (36,037 feet) below sea level.