Check out these crazy things billionaires Jeff Bezos, Elon Musk, others own

From sharks in tanks to empty islands, if you have money, your spending doesn’t have to make sense.

According to Forbes, there are 2,781 billionaires in the world who have an accumulated wealth of $14.2 trillion.

Much of the wealth comes from the top 20, who have gained a combined wealth of $700 billion as compared to last year.

Currently, Bernard Arnault, the owner of luxury goods brand LVMH, is the richest man on earth, followed by Amazon founder Jeff Bezos and Tesla chief executive Elon Musk.

Here is a list of some of the world's billionaire's craziest expenses

Steve Cohen's

Go Banking Rates reported that American hedge fund manager Steven Cohen owns a 14-foot tiger shark that persevered in a tank, which he bought in 2004, for reportedly a price of $8 million to $12 million.

Larry Elison

Oracle founder Larry Ellison bought the Hawaiian island of Lanai in 2012 for $300 million. The tropical island includes two Four Seasons resorts and a town with a population of 3,300.

Bill Gates

In 1994, Microsoft founder Bill Gates spent $30.8 million to buy a 72-page manuscript called the Codex Leicester, written by Leonardo da Vinci in the early 16th century.

Jeff Bezos

The Amazon founder, Jeff Bezos, bought one of the world's most esteemed publications, The Washington Post, in 2013, for a staggering $250 million.

Elon Musk

In a highly unanticipated move that shocked everyone, Space X owner Elon Musk made headlines by spending a whopping $44 billion on acquiring X, formerly known as Twitter.