Arktika, the second nuclear-powered icebreaker made by the Soviet Union, was the first surface ship to reach the North Pole.
One variety of bacteria has only ever been isolated from the wreck of the RMS Titanic; another type of bacteria has only ever been found inside clean rooms used to assemble spacecraft.
In the 18th century, a new pirate crew would come together to elect a captain and quartermaster, and agree on a shared code of conduct: what we today call the pirate code.
Between 1867 and 1927 the New Zealand government built, supplied, and maintained a set of supply huts on islands in the Southern Ocean so that no more castaways would starve to death while waiting for rescue.
In 1864 two ships were wrecked on the same desert island. Despite sharing the island for an entire year, the crews never met and had no idea they were not alone.
Gannets have evolved some very strange adaptations that make them some of the best divers in the natural world.
The USS Triton was the first submarine to circumnavigate the world completely underwater. It was spotted just once, by a Filipino fisherman.
The fastest sailing route around the world – the Clipper route – is also the most dangerous.
The bristlemouth, a small ugly genus of fish found in the ocean twilight zone, is probably the most common vertebrate on the planet – estimates go as high as the quadrillions.
How about that time that the Egyptian Mamluks, with secret support from Venice, battled the Portuguese in the sea off the coast of India?
On 17 February 1832 – at the bidding of Neptune, god of the sea – Charles Darwin was blindfolded, his face covered in paint and pitch, and he was dunked into a water bath. He had crossed the line for the first time.
A significant proportion of the food in the deepest ocean falls from discarded giant larvacean houses.
In 1962 the United States detonated a nuclear bomb in outer space over Hawai’i. It caused an artificial aurora in the sky over Honolulu – and another one over Samoa, more than four thousand kilometres away.
Inaccessible Island, in the south Atlantic, is surrounded by steep sea cliffs that make landing and entering the interior nearly impossible.
In 2006 scientists in Iceland caught a clam that was born eight years after Christopher Columbus sailed to America.
Bridges go over water. Tunnels go under water. How about the Archimedes bridge, a hypothetical tunnel design that goes through water instead?