Worm balls in petri dishes being attacked by freshwater leeches Harry Tuazon et al. 2024
Leeches have evolved a strategy for hunting worms that is the ultimate death spiral.
California blackworms (Lumbriculus variegatus), which live in shallow waters of swamps and marshes, defend themselves from predators by swimming ultra-fast and forming tangled blobs made of dozens of worms. This usually protects them, but Helobdella leeches聽have devised a special trapping technique to feed on them anyway.
鈥淲hat鈥檚 been known is that leeches will just pick off worms [from…
