He's a great guy!  Seen some of his videos before. 

Never had the opportunity to kill an octopus (imagine it would turn into a disaster), but will chuck in my 2c anyway.  Hopefully will get one someday when you squid jigging and make some takoyaki.  I saw a comedian in Japan catch one and try to bite it to death, nearly suffocated him.  The okinawan hunter he was with had to rip it off his head.  Had sucker marks on his face and neck.  Think if you want to do the biting technique don't hold back or hesitate!