Girl in a Wetsuit is a life-size bronze sculpture by Elek Imredy of a woman in a wetsuit, located on a rock in the water along the north side of Stanley Park.
According to Wikipedia, this sculpture depicts a friend of the artist's, in a wetsuit with flippers on her feet and a mask on her forehead.
And in case you wondered why, again according to Wikipedia quoting the artist:

"I didn't believe we should have a copy of the mermaid. She is rightfully a symbol of Copenhagen...
I proposed to have a life-size scuba diver seated there. At that time scuba diving was getting quite
popular here in Vancouver and, just as important, I didn't know of any similar sculpture anywhere in
the world. It was a new idea… There was tremendous opposition and great controversy. I still don't know why"