What Do Coconut Crabs Eat? [Full Diet List 2026]

Coconut crabs are omnivores that eat far more than coconuts. Their diet runs on fallen fruit, nuts, seeds, and tree pith, plus whatever dead animals they find on the forest floor.

But the part that surprises people is what they do to living animals. One documented case involved a crab climbing a tree in the dark, and what it went up there for was not fruit.

Do Coconut Crabs Actually Eat Coconuts?

Yes, but coconuts make up just one part of their diet. A coconut crab can crack a whole coconut open and eat the soft flesh inside.

They do it in clever ways. Sometimes a crab carries a coconut up a tree and drops it to split on the ground. Other times it pokes a claw straight through the soft eyes of the shell and works from there.

That job takes serious force, and their claws deliver it. See how strong a coconut crab is for the numbers behind the grip.

The Main Coconut Crab Diet:

Most of a coconut crab’s diet comes from plants. These are their main foods.

Fruit. Fallen tropical fruits sit at the top of the list, especially fleshy island fruits like pandanus. Fruit makes up a large share of everything they eat.

Nuts and seeds. They crack hard nuts and seed pods that most animals cannot open, which gives them food nothing else on the island can reach.

Coconut flesh. The soft white meat inside a cracked coconut works as a high-energy meal when they can get to it.

Tree pith. They eat the soft inner tissue of fallen trees, a reliable backup when fruit runs short.

Do Coconut Crabs Eat Dead Animals?

Yes, and they are good at finding them. A coconut crab picks up the smell of a carcass from a long distance, then travels to it and feeds.

They also eat the shed shells of other crabs. Those shells carry calcium, which the crab uses to harden its own armor after molting.

This makes them the cleanup crew of their islands. By clearing dead matter, they recycle nutrients back into the soil. Their ocean relatives handle the same job underwater, as you can see in this coconut crab vs lobster comparison.

Do Coconut Crabs Hunt Live Prey?

This is the part most people never hear. Coconut crabs do not just eat fruit and scraps. They hunt.

Researchers have recorded them killing and eating other crabs, along with birds and rats. In one well-known case, a scientist watched a coconut crab climb a tree, grab a sleeping red-footed booby, and haul it down to the ground.

That puts them in a very small group. Almost no invertebrate on Earth hunts and kills birds and mammals, which is a strange resume for an animal named after a fruit.

What Do Baby Coconut Crabs Eat?

Young coconut crabs eat nothing like the adults. They start life as tiny larvae drifting in the ocean, feeding on plankton and floating scraps.

Once they reach shore, they move into empty snail shells and forage along the beach for small bits of plant matter and dead material. Only later do they leave the shell behind and start eating like a full-grown crab.

That shift takes years, and reaching full size takes decades. Read more on how long coconut crabs live.

Why Do Coconut Crabs Eat Such a Wide Diet?

It comes down to survival on a small island. Food there is patchy and unpredictable, and it disappears without warning.

An animal that ate only one thing would starve every time that food ran out. By taking fruit, nuts, carrion, and live prey, a coconut crab always has an option. Their heavy claws and sharp sense of smell make them built for exactly this kind of eat-anything life.

So what do coconut crabs eat? Far more than coconuts. They are true omnivores that take fruit, nuts, seeds, and carrion, and they hunt live birds and small animals when the chance comes.

That flexible diet is the reason they thrive as giants of

Conclusion:

So, what do coconut crabs eat? Far more than coconuts. They are true omnivores, eating fruit, nuts, seeds, carrion, and even hunting live birds and small animals.

This eat-anything diet is exactly what lets them thrive as the giants of their island homes. The next time you hear the name “coconut crab,” remember it only tells half the story of this bold, powerful eater.

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