This morning I managed to manually remove two "worms" I had observed on my little leatherjacket.  He was easy to catch, so I laid him flat in a shallow saucer of tank water and use needlenose pliers to remove the two of them. Hope it wasn't too traumatic for him. 
I tried to take a photo in the shallow water of the "worms".
They look and behave like leeches (except I did not know a saltwater version existed). They sucked onto the bottom of the saucer and wriggled in the current.
		
		
	
	
		
	
				
			I tried to take a photo in the shallow water of the "worms".
They look and behave like leeches (except I did not know a saltwater version existed). They sucked onto the bottom of the saucer and wriggled in the current.