Face your fear of sharks and dare to go back in the water - as long as you’re watching for the scary invasive species lurking in your neighborhood lakes and rivers. We discuss where you’re most at risk from shark attacks and where else the bull shark might turn up. What do people see when they report sharks far from the ocean, and is it dangerous? We also follow a lost bull shark through urban flooding, combined sewers, and other inland terrors of the not-so-deep.

Rochelle Sturtevant, PhD, the program manager for NOAA’s Great Lakes Aquatic Nonindigenous Species Information System (GLANSIS), tells us about the scariest invasive fishes in your backyard, why you can relax about sharks but not alligators - and why the scariest creatures are probably already inside your house. We also hear about the regular reports she gets about space aliens in local waterways.

Listen to “Snakeheads and Sharks, Part 1” and “Snakeheads and Sharks, Part 2,” and subscribe to “30% Wild” at www.thirtywildpod.com

• Where you should be afraid of sharks, and where you shouldn’t
• Shark hoaxes and mistaken sightings
• The sharky lake sturgeon
• The most dangerous state for shark attacks
• Invasive species vs native species vs naturalized ones
• Three terrifying mystery invasives in your local lake
• Can we eat our way out of invasive fish troubles?
• Invasive species vs zombies
• Other scary threats to your waterways: combined sewers and urban flooding
• How to get your free copy of “Invisible Infrastructure” from the book Design by Deficit: Neglect and the Accidental City
• Sharks, alligators, and space aliens in the Great Lakes
• The secret sinister life of goldfish
• Includes the original sea shanty, “Lost Bull Shark, with special guest performances by Larry Womac (Part 1) and Ryan Gill (Part 2)