Nature can be truly horrific and violent, although we don't often come across predators savaging their prey in day-to-day life unless a new David Attenborough documentary comes out.
However, horrified beachgoers over in Cape Cod, Massachusetts came face-to-face with a great white shark's dinner time, as it brutally killed a seal just metres away from the shoreline, causing the sea to turn red with blood.
Way to kill a nice day out at the beach.
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A video posted by the Atlantic White Shark Conservancy shows the attack unfolding, as onlookers gasp and scream in horror.
The footage was posted alongside the description: "Video by Megan Haggett of a predation off Nauset Beach yesterday.
"A number of predations have been witnessed recently off Callanan's Pass (north of the public beach).
"We remind Cape residents and visitors that August-October are the peak months of white shark activity off our coast.
"Please adhere to all signage and flag warnings at beaches and follow instructions of the lifeguards."
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In other words, if you happen to be living or visiting the area right now, don't go in the water. You don't want to be swimming right into a huge feeding ground.
This was expressed by one commenter, who wrote: "Used to love to swim there. Goodbye Cape Cod."
Another wrote: "We were there 2 weeks ago and as gorgeous as it is there and cool to watch the seals, I wouldn't let my kids step into the water. I love mother nature but we love to swim on the Cape too."
And it's not just Massachusetts where you need to be careful. Although in this case no humans were hurt, over in the Bahamas a family were left devastated when their 21-year-old daughter was killed by sharks while out on a snorkelling trip.
Jordan Lindsey, from California, was on a family holiday when she took part in a day trip to Rose Island to snorkel on 26 June.
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Despite a brutal attack which saw two of Jordan's limbs ripped off by the predators, Jordan's mum, Kami, managed to pull her from the water as they waited for an ambulance to arrive. However, sadly Jordan died on the way to the hospital.
Speaking about the impact the incident has had on their family, they wrote in a statement that changes need to be made to 'ensure a tragedy like this does not happen again'.
This includes the request that tour operators ensure there is a designated member of staff who can watch out for snorkelers in distress and look out for potential predators.
Featured Image Credit: Atlantic White Shark Conservancy