2010 got this cold in my area. Had a lot of local fish die off that time from the cold temps back then after being cold stunned. We'll see what happens here. The ocean temp was at 73 yesterday, so hoping it wasn't too bad in the estuary.
I didn't bother covering my yard with blankets because I redid it with 400 native plants two years ago. It would have been hard to know what to cover and what to ignore. The plants that I typically see on the beach (dune sunflower, railroad vine) look awful, but they'll be back and take over again once it warms up. The jamaican dogwood and fire bush are pretty rough too, but I think they'll just drop their leaves and regrow them in a month or two. We'll see what happens.