In a saucepan, add some water to the soup base, season to taste, then add crabs, seafood mix, and shrimp. Cook on medium heat. While that cooks, divide okra into three portions: 40% blended smooth, 40% rough blend, 20% sliced into rings (This is my preferred method for texture, but you can process yours however you like.)
Remove the seafood from the boiling broth and set aside.
Add smoked mackerel and panla to the broth, then stir in the finely blended okra. Let it come to a simmer.
Add the roughly blended okra and simmer lightly.
Return the reserved seafood to the pot, then add okra rings, crayfish, and basil. Mix and let it simmer again.
Adjust seasoning, then turn off the heat and move away from the burner to prevent overcooking.
Serve hot with your favorite swallow (eba, amala, fufu, etc) or enjoy it on its own