Obama Hosts Netflix's National Parks, Finale Time For The Ultimatum

Four years into his overall deal with Netflix, former President Barack Obama finally steps in front of the camera in Our Great National Parks. Obama hosts the five-episode docuseries, which explores the world’s most treasured ecosystems and our changing relationship with wilderness.

Also today: The Ultimatum concludes with a dramatic finale and reunion, Survivor 42 hits the merge, two celebs are revealed on The Masked Singer, and more. Here’s what’s new and noteworthy on TV this Wednesday:

Our Great National Parks: Complete docuseries. President Barack Obama, who protected more public lands and waters than any other U.S. president in history, invites viewers to experience nature in the world’s most iconic national parks in a new five-part series. Each episode explores a different park and encourages viewers to preserve them for future generations. Watch trailer. Streaming on Netflix

The Ultimatum: Season 1 finale. Decision day arrives as the couples must choose whether to propose or say goodbye forever. After the finale, hosts Nick and Vanessa Lachey sit down with the group to rehash the season’s most dramatic moments. Streaming on Netflix

Moon Knight: New episode. Watch preview. Streaming on Disney+

Survivor: New episode. The competition expands to two hours to capture what's sure to be a chaotic merge (or a quasi-merge) filled with lies and defections. Watch preview. 8:00 PM ET on CBS

The Masked Singer: New episode. The remaining singers from Group 2 compete for a spot in the finale, but only one will advance. Call Me Kat star Leslie Jordan joins the show this week as a guest panelist. 8:00 PM ET on FOX

Beyond the Edge: New episode (special time). The celebrity survival series airs an hour later tonight, following Survivor's super-sized merge episode. 10:00 PM ET on CBS

The Family Law: Complete first season. 14-year-old Benjamin Law (Trystan Go) navigates life with his gloriously dysfunctional Chinese-Australian family in this Aussie comedy series. Three seasons aired Down Under from 2016 to 2019. Watch trailer. Streaming on Hulu

Ice Age: Scrat Tales: Complete Season 1. Scrat, Ice Age’s hapless, saber-toothed squirrel, navigates fatherhood in six new animated shorts. Features voice work from Chris Wedges (Scrat) and Karl Wahlgren, who plays the adorable, mischievous Baby Scrat. Watch trailer. Streaming on Disney+

NHL Hockey: Every game counts as the end of the regular season looms. TNT offers two matchups tonight:

• New York Rangers at Philadelphia Flyers 7:00 PM ET/4:00 PM PT
• Los Angeles Kings at Colorado Avalanche 9:30 PM ET/6:30 PM PT

Claire Spellberg Lustig is the Senior Editor at Primetimer and a scholar of The View. Follow her on Twitter at @c_spellberg.