Bertie heads to Mexico to track the dangerous migration of one of the ocean’s most iconic predators: the hammerhead shark in the new documentary “Hammerhead Sharks Up Close with Bertie Gregory,” airing on Sunday, July 5.

The documentary will air at 9 p.m. ET on National Geographic. Those without cable can watch the show for free through FuboTV or DIRECTV, each of which offers a free trial to new users. Sling and Disney+ are other options for streaming the show and promotional offers are available.

WATCH HAMMERHEAD SHARKS UP CLOSE WITH BERTIE GREGORY FOR FREE ON DIRECTV

In National Geographic’s documentary, Bertie Gregory goes in search of a predator, the hammerhead shark in Mexico’s Pacific waters. Once abundant here, hammerhead numbers have declined enough that encounters are now rare.

Bertie investigates what’s leading to the hammerhead decline and how protected waters offer hope for the future.

Below is a look at the trailer for the documentary from National Geographic’s YouTube channel:

Watch Nat Geo’s “Hammerhead Sharks Up Close with Bertie Gregory” on DirecTV with a 5-day free trialWatch Nat Geo’s “Hammerhead Sharks Up Close with Bertie Gregory” on FuboTV with the offer of up to $30 off your first monthStreaming ServiceStarting Monthly PriceFree TrialFree Trial LengthMax DiscountDIRECTV$59.99Yes5 days$30 off first monthFuboTV$55.99Yes5 days$30 off first monthDisney+ with Huly$12.99NoN/AN/ASling TV$45.99NoN/A$30 off first monthHow can I watch “Hammerhead Sharks Up Close with Bertie Gregory” without cable?

Those without cable can watch the show for free through FuboTV or DIRECTV, each of which offers a free trial to new users. Sling and Disney+ are other options for streaming the show and promotional offers are available.

What is FuboTV?

FuboTV is an over-the-top internet live TV streaming service that offers more than 100 channels, like sports, news, entertainment and local channels. It offers DVR storage space, and is designed for people who want to cut the cord, but don’t want to miss out on their favorite live TV and sports. FuboTV offers up to $30 off your first month.

What is DIRECTV?

The streaming platform offers a vast array of content, including the best of live and on-demand streaming, with over 75 live TV channels to get started.

What is Sling?

Sling TV is the first app-based TV service, letting you stream live television and on-demand content over the internet. With Sling TV, you get to choose the television option that’s right for you, including Channel Add-ons, Premium Add-ons, DVR Plus and more.