* Scavengers, not predators: Crabs are primarily scavengers, meaning they feed on dead animals and plants. They're not typically aggressive predators like sharks or crocodiles.
* Size and strength: While larger crabs can have powerful claws, they are generally not strong enough to break through human flesh or bone.
* Diet: Crabs usually feed on smaller, softer organisms like shellfish, worms, and algae.
* Decomposition: A dead human body would decompose rapidly, attracting a variety of other scavengers like insects, bacteria, and larger animals. Crabs might occasionally feed on some of the softer tissues after decomposition has begun, but they would not be the primary cause of decomposition.
Important note: There are some specific types of crabs, like the "coconut crab", that can be large enough to crack open a coconut. However, even these crabs would likely not target a human body.
In summary: While crabs may occasionally nibble on a dead human body during decomposition, they are not a primary cause of death or a significant threat to humans.