A British Columbia man accused of stripping naked and jumping into a shark tank at a Toronto aquarium has pleaded guilty to mischief.

David Weaver, of Nelson, B.C., was arrested and charged in October of last year, four days after the alleged incident.

Seahorses are on the brink of extinction, according to one Vancouver biologist who has dedicated her life to protecting the fish.

David Weaver allegedly took off his clothes, hopped a security barrier and jumped into the "dangerous lagoon" of the aquarium last October.

A man accused of swimming naked in a shark tank at a Toronto aquarium is set to stand trial in September. They allege Weaver then went to the city's Ripley's Aquarium two hours later, stripped off his clothes, hopped a barrier and jumped into the shark tank.

Video of the incident showed the man swimming in the water and doing a backflip before leaving the premises.

A police spokesperson told Global News the suspect was arrested by Ontario Provincial Police. The spokesperson said officers are working to bring the man back to Toronto.

Police said no one was injured in the incident — including the animals — but the swimmer was gone by the time officers arrived.

Toronto police say the CN Tower and other nearby affected areas reopened at 5 p.m. on Friday.

Toronto police said the CN Tower, Ripley's Aquarium, Steam Whistle Brewery, The Rec Room, Gates 1 to 6 of the Rogers Centre and a portion of Bremner Boulevard were all closed as of mid-Tuesday afternoon.