The pancakes form when foam floating on a river or the sea freeze. These frozen chunks are then shaped by being rubbed against one another in eddies of water.
Sargassum, a type of seaweed, is creating problems as it washes up across the Caribbean.
Scientists said the critically-endangered species had previously only been found in rivers and know pearl mussels have been discovered in the Scotland Lochs.
Finding the deep-diving species so far inland was incredible. Rescuers made a sterling effort to save the 21ft-long animal found in a tributary of the River Clyde near Glasgow Airport. Two died after stranding on shores of the Firth of Clyde and another in the Western Isles.
The Moray Firth dolphins have been moving out of their normal range in Scotland waters. A dolphin known as Yoda is the latest member to be spotted far from home. Another Moray Firth dolphin has been seen in the Irish Sea.
Pink salmon are native to the Pacific Ocean. From stocking programs in Russia in the 1960s they have spread to Northern Europe, and in 2017 male and female pink salmon were spotted in the River Ness in the Highlands of Scotland. And now, two years later, camera images suggest that their spawn has returned.
Droughts in continental Europe are a possible cause for sightings of a Mediterranean bird in Britain and Ireland, say ornithologists.
The discovery in the Cairngorms is only the eighth time a cow wheat shieldbug has been recorded in Scotland.
'Unprecedented numbers' of pink salmon were seen in 2017 and the fish have been spotted again this year.
They say the animal is currently near a lock at Vernon, about 70km (43 miles) north-west of Paris.Experts are puzzled as to why the animal has strayed so far south from its natural habitat.
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