Dynamic Watchlist Hub: Jan 13, 2026

10 Best Movies Like Poseidon Rex

If you loved Poseidon Rex, we've curated the perfect watchlist for you based on shared genres, themes, and directorial style.

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Expert Review & Ratings

See our full critical analysis and audience score for Poseidon Rex.

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#1
Still/Born

Still/Born

2018★ 5.8

Why watch this? A perfect follow-up to Poseidon Rex for fans of Horror. It captures a similar spine-chilling atmosphere.

Still/Born follows Mary, a new mother who lost one of her twins in childbirth. As she struggles with the loss of one of her children, she starts to suspect something sinister is af...

#2
Partysaurus Rex

Partysaurus Rex

2012★ 7.1

Why watch this? A perfect follow-up to Poseidon Rex for fans of Family. It captures a similar light-hearted atmosphere.

When Rex finds himself left behind in the bathroom, he puts his limbs to use by getting a bath going for a bunch of new toy friends....

#3
Sand Sharks

Sand Sharks

2011★ 3.7

Why watch this? A perfect follow-up to Poseidon Rex for fans of Horror. It captures a similar spine-chilling atmosphere.

Just when you thought it was safe to go back to the beach, it appears that our large fishy friends have found a way to chomp on you when you're chilling out on the sand too!...

#4
Pure Country

Pure Country

1992★ 7.0

Why watch this? A perfect follow-up to Poseidon Rex for fans of Drama. It captures a similar emotionally gripping atmosphere.

Dusty Chandler is a super star in the country music world, but his shows have the style of a '70s rock concert. One day he takes a walk - out of his overdone concerts to find his r...

#5
Mega Shark vs. Mecha Shark

Mega Shark vs. Mecha Shark

2014★ 4.0

Why watch this? A perfect follow-up to Poseidon Rex for fans of Action. It captures a similar adrenaline-pumping atmosphere.

When another Mega Shark returns from the depths of the sea, world militaries go on high alert. Ocean traffic grinds to a standstill as everyone lives in fear of the insatiable beas...

#6
The Horrible Dr. Hichcock

The Horrible Dr. Hichcock

1962★ 5.8

Why watch this? A perfect follow-up to Poseidon Rex for fans of Horror. It captures a similar spine-chilling atmosphere.

In late 19th century London, a woman weds a necrophiliac doctor whose first wife died under mysterious circumstances - and who might be returning from the grave to torment her succ...