Mom, 30, freedives into a VERY tight underwater tunnel in Florida

Nerve-racking footage captures a woman freediving through a very tight cave network, with the tunnel only just wide enough for her body to fit through.

In the 42-second-long clip, , 30, from St. Petersburg, , can be seen taking a breath before calmly plunging to the depths below in Ginnie Springs.

With a GoPro in one hand, she uses her other hand to slowly guide her through the underwater obstacle course until she slips through the tunnel and pops up the other side to the surface. The total time underwater spans 30 seconds.

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