I heard Turkish fishing boats had a try, but it seems unlikely that they were even in the area. So a rumour is my guess.
Can anyone can survive very long in the Black Sea at this time of year? Surely they'd have found any dinghies by now.
If the two Ukrainian missiles ignited the many Russian ones, it seems unlikely there were survivors.
I don't wish death on anyone individually [except the real evil-doers], but collectively, reducing the number of Russian combatants operating from a powerful ship is a benefit.