Way down at the end of the landing page (after the photos) is this:

"* Disclaimer: All the images are collected from public domain sources and model release has not been obtained."

That's clearly not true as there is a picture of a drink on a tropical beach that is a Shutterstock image:

ww.shutterstock.com/pic-103454048/stock-photo-red-drink-with-a-straw-on-the-white-beach-with-ocean-and-sky-in-the-background.html

In the grid of image thumbs it's far right, three rows up from the bottom.

There are a few suppliers out there who offer huge bundles of images (legit as far as i could tell when I looked a year or so ago) with "master reseller rights", but this appears to be theft (I'm sure they'd say they just found the image somewhere and didn't realize...)

Given no way of knowing which agencies were the source, where would we even take a complaint like this? Shutterstock went after Fiverr over the Gigs that said Shutterstock's name in particular, but let stand a bunch of gigs that offered to get you images by number and used SS thumbs but didn't actually use the word Shutterstock.

It's a shame the agencies don't pool their resources with an image abuse clearinghouse...