If you need some cool group Halloween costume ideas, we've got 11 fabulously creative ones that even tweens and teens can get behind.

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Amazon.com: Civaner Shark Costume Shark Fin Gray Swimfin Shark Costume Costume Props Easy to Wear Shark Accessories Costume for Adults and Kids Cosplay : Clothing, Shoes & Jewelry

He's adorable, he supports LGBT rights in Russia, AND HE HAS A RABBIT NAMED MORTIMER.

Mens Halloween Costumes Womens Halloween Costumes

DIY shark costumes are funny, surprising, and gender-neutral getups to make you a cute predator of attention. Here are some ideas for DIY shark costume for all ages, including a complete shark, a hoodie shark, box shark headgear, or cardboard shark-shaped depictions.

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Shark week group halloween costume - awesome!

Look like the ultimate predator this Halloween once you slip on this hilarious shark hat. This comfortable hat makes you look like you have a great white taking a chomp out of your head and is sure to get plenty of laughs at the costume party! Don't swim too close!