flatworm, platyhelminth
["plunger, plumber's helper", 'tiger shark, Galeocerdo cuvieri', 'sidewinder, horned rattlesnake, Crotalus cerastes', 'snorkel', 'horned viper, cerastes, sand viper, horned asp, Cerastes cornutus', 'green snake, grass snake', 'lacewing, lacewing fly']