Yes totally legal ! Is it worth the speech that, our local protector of the great world record muskie what if, CO Bruce Ward (out of the Midland OPP detachment) will give you when he has you pulled over for a spot check on Georgian Bay... NO ! (see glens post for comfirmation! LOL)
I also had a long talk with the CO on Lake Nippissing this June when we were at Lakair... and discussed this very subject. Seems they are all being turned by HDQ to give the same speech. Legal to fish.. YES... legal to posses ... NO.. so they say if you catch one it has to be water released... no net.. no pictures... blah blah blah..
Which brings up another subject that he decided it was time to leave my boat on.... what about fishing for fish in season that have ZERO possession period... like Sturgeon. Why all the pics of those when you can't possess them ! LOL