i took like 6-8 out last month.. i just wear gloves n forcefully peel it away with my hands or if its rly in the rock i get a dull knife n dig it out trying my best not to harm it.  But of course those who have tried knows that its super hard not harming it sometimes and i do get huge tears or sometimes rip it in half.  I toss them in my sump and they all seem to just heal again no problem. 
		
	
		
		
		
		
			
		
		
		
		
	
		
		
	
	
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