NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
8
The North Atlantic gets 2.5 centimetres (1in) wider every year.
119
The Titanic is about as long as the Empire State building is tall.
174
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
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
Two dogs were among the Titanic survivors.
262