Multiple Processes listening on Port 22? How is this possible?

Question

I have a Solaris 10 Server that has SSH enabled, I wanted to find out which specific process is responsible for opening the socket that listens for the port 22. I used the PFiles utility to loop over all the processes in the /proc folder to find this out using the simple script below:

PORT=22; for PID in /proc/*; do pfiles ${PID} |grep "port: ${PORT}" && echo ${PID}; done

What I found out was there are multiple processes listening to this same port. Sample output is below:

   sockname: AF_INET6 ::ffff:10.192.18.188  port: 22 /proc/26766
   sockname: AF_INET6 ::ffff:10.192.18.188  port: 22 /proc/26767
   sockname: AF_INET6 ::  port: 22 /proc/620
   sockname: AF_INET6 ::ffff:10.192.18.188  port: 22  /proc/9131
   sockname: AF_INET6 ::ffff:10.192.18.188  port: 22 /proc/9132

My question is, how is this possible? Can multiple processes listen for the same port on the same IP address? And if this is possible, do all this process IDs share a single socket that is bound to this address:port or have multiple sockets open each of which listens on the same address:port, and the kernel decides which socket to pass the connection to at a specific moment in time? Can someone kindly clarify? Thanks!