These 18 celebrities occasionally ditch their red-carpet glamour for not-so-flattering scuba gear. Stars — they really are just like us!

1. Jessica Alba

This actress has been a certified diver since a young age. She used her diving and freediving skills in the feature film Into the Blue. Alba was also featured on the cover of Scuba Diving in 2005.

2. Salma Hayek

This silver-screen actress got scuba certified with fellow actor Woody Harrelson while working on the 2004 comedy film After the Sunset.

3. Steven Tyler

Aerosmith’s eclectic frontman — and bandmate Joe Perry — have frequented Maui for Hawaiian diving.

4. Tiger Woods

With plenty of dive shops just around the corner from his South Florida restaurant, The Woods Jupiter, it’s no wonder this champion golfer has picked up scuba as a hobby.

5. Tom Hanks

After getting certified in the 1980s for his role in Splash, Tom Hanks has continued his training and now dives with his son.

6. The British Royal Family

The Royal Family is full of divers including Prince Philip, Prince Charles, Prince William, and even Kate Middleton, who earned her Advanced Open Water certification in 2015.

7. Tom Cruise

It’s not surprising this action star loves diving during his downtime. His former wife, Dawson’s Creek actress Katie Holmes, is also certified.

8. William Shatner

After years spent exploring space as Star Trek’s Captain Kirk, it only seems natural for William Shatner to venture to the deep sea next.

9. Patrick Stewart

Captain Kirk’s crewmate on the Starship Enterprise, Captain Jean-Luc Picard, has also traded his spacesuit for a wetsuit.

10. Sandra Bullock

Although she can’t swim, Sandra Bullock took up scuba diving to conquer her fear of being underwater.

11. John Krasinski

The Office star and his wife, Emily Blunt, had a close encounter with a shark while diving on their honeymoon.

12. Blake Lively

Another celebrity scuba couple, Blake Lively and husband Ryan Reynolds are both avid divers.

13. Paris Hilton

Hotel heiress Paris Hilton got her scuba certification in Hawaii in 2009.

14. Jeff Gordon

An introductory dive in the Cayman Islands got this NASCAR driver hooked on scuba. He even convinced teammate Jimmie Johnson to join him underwater.

15. Al Gore

Politician Al Gore has said that his first dive experience off the coast of South Florida remains part of the reason he fights to protect the environment.

16. Samuel L. Jackson

This iconic actor recently made headlines for scuba diving in search of sunken slave ships off the coast of Ghana while filming his new docuseries.

17. Glenn Close

Singer, actress, diver and ocean advocate, Glenn Close joined Mission Blue on a voyage in 2010.

18. Homer Simpson

And you thought animated characters didn’t need certifications for their antics… The rules still apply to Homer Simpson, who holds an honorary PADI Open Water cert.