Callback
Re "donkey's ages"...well you did post to me yourself that your were aware of the trepang initiative being discussed for ages re Groote
I'd need to go and access the stuff I was reading to give then their correct name (but I'm bot going to) but apparently one method of attempting to protect the marine environment is to erect screens around the dredging or mining process. But not to worry, your original reply is OK with me.
