Last month a British mom had the shock of a lifetime when she opened up a can of tuna to find a tiny black-eyed creature staring back at her. The tuna company, Princes, has revealed that the creature was most likely a Megalopa — a type of tiny crab. Unfortunately, as far as “things packaged as tuna that actually aren’t,” the Megalopa should be the least of your concerns.

The mystery behind the strange creature Zoe Butler found inside her can of Princes tuna fish produced a thought that lurks in the back of all our minds: How do we know that what’s printed on the package is really what’s inside the can?

As reported by CBS News, Princes confirmed that the creature Butler found in her tuna was an immature Megalopa, or a type of crustacean. In actuality, the Megalopa would have been absolutely harmless if Butler and her family went on to unknowingly eat it. Even the tongue-eating louse, which museum scientist Stuart Hine told The Telegraph may also be the organism’s identity, would have been perfectly harmless if ingested. Truth is, we probably unknowingly eat way more disturbing things than baby crabs on a regular basis.

According to Buzzfeed, the Food and Drug Administration is pretty lenient with what they allow to be mixed in with fish products. For example, according to the FDA’s Defect Level’s Handbook, for blue fish, there can be “60 parasitic cysts per 100 fish (fish averaging 1 pound or less) or 100 pounds of fish averaging over 1 pound), provided that 20 percent of the fish examined are infested,” the handbook reads. As for red fish and ocean perch, defect status is considered when “three percent of the fillets examined contain one or more copepods accompanied by pus pockets.”

Also, if you’re not purchasing “dolphin safe tuna,” chances are your tuna salad contains a few more ocean creatures, a few of which are considered endangered. The Independent reported method used to catch tuna in non-eco-friendly fisheries also traps dolphin, sharks, turtles, and even albatross.