Original: , k ne ` move ' + , rhynchos ` snout ' ) is a phylum of small ( 1 mm or less ) marine pseudocoelomate invertebrates that are widespread in mud or sand at all depths as part of the meiobenthos .
Simplified: Kinorhynchans are segmented , limbless animals , with a body consisting of a head , neck , and a trunk of eleven segments .