UPDATE: This bowl is now on sale on ebay: https://www.ebay.co.uk/itm/223369959912 or click here
As part of a group of Chinese bowls that I acquire. Here it is a Song dynasty bowl (again):

Do you have any idea of the date? I would suggest the late Song Dynasty probably 12th century?

The bowl has olive colour and no-shine. I think it is un-glazed (?)
There are four carving, probably of lotus design (?) in the inner side of the bowl.

And on the outer side, there are cat crawls kind-of shape.

This is I think similar to the one found in Jepara wreck. See here from Koh-antique.

The bowl is probably found in the sea. It looks like probably kind of attached to some sea shells? Anyway the appearance of the bowl is not that clean.

The bowl is found in Indonesia, probably in or near the Java sea.

Do you have any idea of what kiln it this? Do you have similar bowl? Please post on comments below..

I have some bowls on sale on my ebay, please have a look here http://ebay.us/dg2Yn8