Andrew K. Rindsberg wrote:
 
Long ago and far away, while engaged in deepsea work, I ran across late
19th-century references to an apparatus that consisted of a T-bar with many
strands of frayed rope attached, rather like a large push-broom.
 
The gadget or apparatus is still used in the Mediterranean for harvesting Red
coral in very deep and difficult to reach rocky ledges. Mollusc shell also come
up entangled in its strands,
 
Constantine.