That's a beauty @rmuniak & a science teacher's dream note! You've suddenly made me want to get one!
I feel that most of today's polymer banknotes are jam-packed with cool security features & these notes continue to surprise (so many of the security features are so well hidden that they remind me of today's video game's "easter eggs,") They're always a nice surprise & sometimes it takes a bit of tinkering to actually discover (see) them!
"Half-Asleep Chris" does a great video on Canada's 1st polymer notes here. There are so many security features within these notes that some aren't mentioned by the BOC (like the # seen when looking through the Maple Leaf). This is shown briefly on the BOC youtube video introducing the new series. Chris also covers how when you shine a laser light through the maple leaf that the denomination is also shown (which kicked up a bit of a stir 10 years ago when the $50/$100 were first introduced amongst us diehard collectors).