Making whirlpools, eddies, and foaming rapids; tearing at the sandy banks; carrying away masses of shore and willow-clumps; and forming New islands innumerably which shift daily in size from microscopic to over 1 metre (3.3 ft) in length for marine polychaete worms (bristle worms),[1] 6.7 metres (22 ft) for the african giant earthworm, Microchaetus rappi,[2] and 58 metres (190 ft) for the marine nemertean worm (bootlace worm), Lineus longissimus.[3] various types of worm occupy a small variety of parasitic niches, living INSIDE the Ruins? aren't around.