There are some other differences between Great and Snowy Egrets in appearance of course but I think the comparisons I have written about are the most helpful for me in the field for identification and may be for other people too.
After posting Great Blue Heron images yesterday I decided to post images of Great Egrets which are also a large wading bird species this morning.
I remember the morning I took this photo well, it was a warm morning in February at Fort De Soto's north beach, the Great Egret was in the tidal lagoon near the Concession Stand and it had been actively hunting when it came up with this Mullet.