Manla Hunting

Hi Good day, I just want to share this.
We called this manla here in our place. This creature looks like a crab and a lobster.
And they lived under the mini mountain sand in the sea.
I will place the picture according to its steps on how to get this thing.

And you will find the hole.

When you found it, you will place the another manla after you tied with any kind of ropes with their tail in the hole as a trap so that the another one will fight your manla and you will pull the rope and the another manla will go outside and then you can caught that manla using your hand with or without hand gloves.

And you will just repeat those steps. Thats all. Thank you.