A bunch of tech billionaires, celebrities, and startup founders spent the weekend partying on a cruise ship - here are the incredible photos

Two thousand influencers - from tech entrepreneurs like Uber CEO Travis Kalanick and Google chairman Eric Schmidt to musicians like John Legend - took to the high seas this past weekend for the second-ever Summit at Sea.

The four-day summit took place on a Norweigan Cruise Line boat and was filled with musical performances, fireside chats, and Q&A sessions. 

The cruise was put on by Summit Series, an organization founded in 2008 to build a community of younger, "cooler" entrepreneurs. 

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Jennifer Gilbert (left), founder of special events company Save the Date, shared this photo from outside the boat. 

 As seen in this photo taken by Kellie Gerardi, a candidate for the 2025 Mars One expedition, many of the talks took place on the main cruise deck, with a view of some water slides in the background.

The view was beautiful, as Uber's billionaire cofounder Garrett Camp shows us here.

 Singer John Legend, Equal Justice Initiative Founder Bryan Stevenson, and actor Harry Belafonte, spoke about art and social justice. 

Legend played a set after the panel was over.

During one session, the crowd got the chance to participate in a Google Hangout with Edward Snowden.

But one goal of the summit was to unplug from technology - the only place on the boat you could get WiFi service was the Internet Lounge. Many participants did yoga on the deck in the morning.  

 And there was lots of relaxing by the pool.

 At night, participants were treated to musical performances by St. Lucia, the Wailers, and others. 

 And of course, there were parties. Megan O'Connor, chief growth officer of Human Ventures, shared this photo. 

 It looked like a blast.