they may have attached a buoy/locator to it, but if you listen to the press conference they are looking for survivors. recovering a body is time consuming and has a heightened risk, they would not prioritize that over continuing to search for survivors.
I totally understand the need to search for (and, hopefully, find) survivors. But, if my loved one was on the boat and they left a body that might be him/her I would be inconsolable and angry.