sponge

A special find at the beach, it looks like a

small tree thats been gathering sticks.

Have seen the beach at Stradbroke island covered 

in them after big seas & winds, but could never figure 

out how they come about. (There are some shells

which gather smaller shells & set them into their own.)

Now it looks like these sponges catch

grass/sticks, once they come loose from their roots.

If you know more, please let me know.