渦 - whirlpool, eddy, vortex

whirlpool; maelstrom; vortex; eddy; swirl

vortex; maelstrom; whirlpool

whirlpool; swirl; eddy; vortex; maelstrom

spiral galaxy

vortex filament; vortex line

swirling current; eddy; whirlpool; vortex; maelstrom

whirlpool design

spiral

spiral pattern

cold vortex

dinoflagellates

Xenoturbella (genus of worm-like basal deuterostomes)