The blobfish went viral with this photo, but underwater they look like a completely different fish. They sustain tissue damage when they're brought from the ocean's depths to the surface.

Ukraine's security service has hit the Kerch Bridge linking Russia to Crimea with underwater explosives after what it said was "months of planning" - and released a video of the strike.

Swimming headphones, on the other hand, will. There's no Bluetooth underwater, so these devices will use bone conduction to deliver sound through vibrations. For most swimmers, I'd say the best ...