Freak Wave (07:36)
In 2015, swimmers in Australia were injured during an unpredictable rogue wave. Multiple forces acting on oceans including storms and currents create giant waves.
Fog Tsunami (06:08)
A fisherman recalls May of 2014 when a wall of fog advanced across Lake Michigan. Cold, low air pressure and water droplets combined to create this worldwide spectacle.
Sea Lamprey (08:49)
Great Lakes fisheries have managed invasive sea lampreys for decades. Scientists use naturally occurring hormones to attract and repel the pests from spawning grounds.
Epomis Beetle (05:47)
Role reversal predators feed on frogs before pupating into ground beetles. Larvae can eat up to nine frogs.
Greenland Shark (06:30)
Little is known about deep sea dwelling Greenland sharks. Researchers use carbon dating to age the ocean scavengers.
Croy Brae (06:38)
An optical illusion explains why cars seem to roll uphill in Scotland. Magnetic hills are created by our eyes, not gravity.
Musical Great Whites (05:52)
Sharks investigate low-frequency sounds played underwater. According to an eco-tourism guide, they prefer specific songs.
Credits: Weird Wonders of the World (Series 2): Episode 5 (00:33)
Credits: Weird Wonders of the World (Series 2): Episode 5
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