 At St Michael's Mount, the sea rose suddenly and then retired; ten minutes later, it rose very rapidly, then ebbed equally rapidly.The sea rose in Penzance and at Newlyn; the same effect was reported at St Ives and Hayle.Although there is no record of the overall death toll, the 19th-century French writer Arnold Boscowitz claimed that "great loss of life and property occurred upon the coasts of Cornwall".