Even though it has been 20 years since the release of the movie, ‘Titanic' has managed to remain relevant even now. The movie still causes a lot of discussions, the main recurring question obviously being ‘Why the hell didn't Rose move just a little bit to make space for Jack on that huge plank of wood?'

This past Wednesday, the Leonardo DiCaprio Foundation held its yearly gala to raise money for environmental causes. You know, how Leo is all about saving the environment now? He's not all talk, he actually does whatever he can to help the cause.

A lot of celebrities attended the gala, Madonna performed, but the best part was when Leo's Titanic co-stars made an appearance as well. 

So thrilled to reunite with friends and contribute to such an important cause. My painting behind us was auctioned for €100,000.00 last night! @leonardodicapriofdn art auction. Crazy proud! @katewinsletofficial @leonardodicaprio

A post shared by Billy Zane (@billyzane) on Jul 27, 2017 at 11:38am PDT

And, this reunion was the perfect opportunity for Billy Zane to use this incredible caption.

Gangs back together. Now we're saving icebergs. Go figure.. @katewinsletofficial @leonardodicaprio @leonardodicapriofdn

A post shared by Billy Zane (@billyzane) on Jul 26, 2017 at 1:12pm PDT

Almost all the comments on this picture are about how hilarious his caption is.

The joke spread on Twitter, too, obviously.

Highest of ironies: cast of Titanic has 20yr reunion to discuss how they can save melting ice caps. #LeonardoDiCapriofoundation

— Cody A. Brobst (@CodyABrobst) July 27, 2017

pic.twitter.com/5qKkyBhsUK

— Sara Horton (@SPN_Sara87) July 26, 2017

Billy Zane, Kate Winslet, and Leonardo DiCaprio have a Titanic reunion. Instead of being hit by an iceberg, they gather to save icebergs. pic.twitter.com/LJ7uSzVjPR

— Mike Sington (@MikeSington) July 27, 2017