District of North Vancouver Fire Rescue crews were called to the area around 4 pm. PT when park staff noticed two men and a woman, described as being in their late teens to early 20s, in distress in the water.
According to Asst. Fire Chief Jim Bonneville, fire officials lowered a rope into the water from the suspension bridge, but the three were already in the process of swimming away.
"They walked down to Lynn Creek a little further downstream where they thought these individuals would come out from swimming in the pool area," said Bonneville.
"They met up with them, checked them over, and made a decision to walk them back up the trail and handed off to care of B.C. Ambulance."
No one was injured, although the woman had become concerned she may be suffering from hypothermia while swimming after the jump.
Bonneville is reminding the public that despite it being summer, the water in the area can still be very cold.
Initially, it was thought the group fell or jumped from the suspension bridge itself, which hangs 50 metres above the canyon.
The incident comes just two days after District of North Vancouver Fire carried a woman out of Lynn Canyon park when she slipped and fell off a steep bank, injuring her ankle.
The suspension bridge was built in 1912 when the park opened and connects hiking trails on both sides of the canyon as part of the Baden-Powell Trail.
Google Map of Lynn Canyon suspension bridge