The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The Caspian Sea is also classed as the world's largest lake.
52
The time interval from first sighting of the iceberg that sank the Titanic to impact was a little over 30 seconds.
105
Sharks, like other fish, have their reproductive organs in their chests.
248
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
If Antarctica's ice sheets melted, the worlds oceans would rise by 60 to 65 metres (200 - 210ft) - everywhere
181
NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8