Swim footwear

I’m looking to do some early season ocean swims in New England, and the water is COLD. I’m looking for what I guess you’d call booties, but didnt see anything on QR or Ironman’s sites. Any suggestions?

Maybe a scuba/wetsuit shop. I thought somebody made a “swim” specific bootie, but I can’t remeber who.
A scuba shop should have some already in stock.

There are surf specific ones and Teva makes one also.