Auparavant, les eaux tempérées du Golfe charriaient les larves jusque dans les eaux froides de l'Atlantique, mais, une fois la levée aménagée, la migration naturelle des larves a pris fin, de sorte que le homard a pratiquement disparu de la baie Chédabouctou.
Formerly, the larvae would drift through the warmer waters of the Gulf into the cold waters of the Atlantic, but once that causeway was constructed the natural migration of the larvae was terminated so that lobster virtually disappeared in Chedabucto Bay.