![Brian Roedel This image released by National Geographic shows actor/host Anthony Mackie, left, with scientists Dr. Marcus Drymon, center, and PhD researcher Christian Walker as they tag a baby Bull Shark caught in Lake Pontchartrain in Louisiana during the filming of "Shark Beach with Anthony Mackie." (Brian Roedel/National Geographic via AP)](https://mapi.associatedpress.com/v2/items/f171e55036714099a809aff9f3b17be5/preview/preview.jpg?s=680x&wm=false)
This image released by National Geographic shows actor/host Anthony Mackie, left, with scientists Dr. Marcus Drymon, center, and PhD researcher Christian Walker as they tag a baby Bull Shark caught in Lake Pontchartrain in Louisiana during the filming of "Shark Beach with Anthony Mackie." (Brian Roedel/National Geographic via AP)
![Brian Roedel This image released by National Geographic shows actor/host Anthony Mackie Anthony fishing from his kayak on the Bayous of Violet, La., during the filming of "Shark Beach with Anthony Mackie." (Brian Roedel/National Geographic via AP)](https://mapi.associatedpress.com/v2/items/d04809bbdf504dda8c40b675418c203e/preview/preview.jpg?s=680x&wm=false)
This image released by National Geographic shows actor/host Anthony Mackie Anthony fishing from his kayak on the Bayous of Violet, La., during the filming of "Shark Beach with Anthony Mackie." (Brian Roedel/National Geographic via AP)
![Brian Roedel This image released by National Geographic shows actor/host Anthony Mackie wading in the Bayous near Violet, La., during the filming of "Shark Beach with Anthony Mackie." (Brian Roedel/National Geographic via AP)](https://mapi.associatedpress.com/v2/items/9cd3a2f9857945859007b219eb951542/preview/preview.jpg?s=680x&wm=false)
This image released by National Geographic shows actor/host Anthony Mackie wading in the Bayous near Violet, La., during the filming of "Shark Beach with Anthony Mackie." (Brian Roedel/National Geographic via AP)