It's rarely wise to assume that the folk-myths of a largely illiterate and extremely superstitious group of relatively primitive people can be relied upon in any way. There's zero evidence in Egyptian archeological records of any significant group of Hebrews decamping (or even existing) anywhere near the time Moyshe and his people are supposed to have lived. Conversely, there are a great many potential explanations for the discovery of animal and human remains in an area subject to periodic tidal events. As pretty much every single event described in the Christian mythology has no independent evidence to support it, one ought to treat it as nothing more than a collection of somewhat disconnected and internally inconsistent fairytales rather than as a guide to actual historical events. Failing to do this merely exposes one to accusations of extreme naivete.