leech on ice after spring awakening

leech ice spring awakening horseleech haemopsis gulo animal parasites annelida aquatic organism batten bleeder bloodsucking parasite bloodsucker body snatcher cadger caterpillar culprit deadhead died discshaped sucker epizoic guest hangeron helminthology hirudinea hookworm hoover hostparasite relationships invader stuck parasitic diseases worms parasitism pisces roach sponge sponger squeeze dry sucks blood juices tapeworm wringer zoo