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St Michaels MNount Cornwall seen from above

Prehistoric communities off the coast of Britain embraced rising seas – what this means for today's island nations (erthygl Saesneg)

Dyma erthygl yn Saesneg gan Sophie Ward, o'r Ysgol Gwyddorau EigionÌý a Robert Barnett o Brifysgol Exeter sydd yn cael ei hail gyhoeddi o'r gwreiddiol ar dudalen ar ein tudalen Saesneg o dan drwydded Creative Commons. Mae The Conversation yn safle sy’n galluogi academyddion i ysgrifennu’n uniongyrchol er mwyn rhannu eu harbenigedd gyda’r cyhoedd. Darllenwch yr .

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St Michaels MNount Cornwall seen from above
St. Michael’s Mount, a tidal island off Cornwall, also said to be near the legendary land of Lyonesse.
Credit:https://unsplash.com/photos/sg7zgMb3OQY @benjaminelliott
Aerial image of sea and coastshowingsubmerged marks
Submerged prehistoric field boundaries, Isles of Scilly.
Credit:© Historic England Archive
Coastline maps showing how land submerged
The Isles of Scilly – then and now. Showing land (green), water (blue, darker for deeper water) and the intertidal zone (orange)

Newyddion Perthnasol