Morning walkers were greeted with a curious sight in August 2017 when vast sections of a plastic pipe were washed up on the sands between Winterton-on-Sea and Sea Palling in Norfolk.
Children on Germany's North Sea island Langeoog thought the Easter bunny had come early in January 2017 as thousands of colourful plastic eggs floated onto its sandy beaches.
Known as egagropili, these strange hairy spheres are the remains of Posidonia australis, a seagrass also known as Neptune Grass that grows in large meadows around Australia's southern coast.
In the frigid depths of winter a strange phenomenon occurs in Lake Michigan. Perfectly formed ice balls can be seen floating in the water and lying along the shoreline of the Great Lake.
If you go down to the beach on the Cook Islands, you might be in for a big surprise… sea cucumbers. Lots of them. The seabed and seashore can be littered with the giant slug-like beasts.
The remote beaches of the Norwegian archipelago of Svalbard have a stark and strange beauty – especially if you stumble across the sinister-looking old bleached bones of a whale.
The idyllic white sands of Ao Prao Beach in Thailand's Koh Samet were blighted with a film and gobbets of crude oil in 2013 when 50,000 litres spilled offshore during a faulty transfer operation between a tanker and a seabed pipeline.
Masses of heavy timber washed ashore in Dorset in January 2008 after the MV Ice Prince, a 328-foot (100m) Greek-registered cargo ship, sank in the English Channel.
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