Clean the coconut crabs thoroughly, removing any shell and internal organs. Cut them into manageable pieces if necessary.
Heat the coconut oil in a large skillet or wok over medium heat.
Add the chopped onion, garlic, and ginger. Sauté until the onion becomes translucent and fragrant.
Add the coconut crab pieces to the skillet. Cook for 5-7 minutes, turning occasionally, until they start to brown.
Pour in the coconut milk, soy sauce, and fish sauce. Stir well to coat the crab pieces evenly.
Reduce the heat and let it simmer for 15-20 minutes, or until the crab is cooked through and the sauce has thickened slightly.
Stir in the lime juice and season with salt and pepper to taste.
Garnish with fresh cilantro.
Enjoy your meal!