Scientists said that the octopuses appeared to deliberately launch silt and even shells at nearby neighbors by using a jet of water from a funnel at the front of their bodies.
And finally, the innermost layer is the renal pelvis, a funnel-shaped tube surrounded by smooth muscle that uses peristalsis to move urine out of the kidney, into the ureter, and into the bladder.
Through the small square of glass in the opposite wall Charity saw a deep funnel of sky, so black, so remote, so palpitating with frosty stars that her very soul seemed to be sucked into it.