This video says about itself:
Conger Eels off Irish West Coast
Monty Hall dives with Conger eels off Roundstone on the Connemara coast.
This was the first time ever that this fish species was found in that canal.
This conger eel was 43 centimeter. Adults may get much longer.
During that monitoring in 2012, there had been another unusual species as well: a lesser spotted dogfish.