Usually nematodes are eel shaped and move like an eel or snake. However, some exceptions exist. The plant parasitic Criconematidae move like a caterpillar but the most unusual ways of movement are found amongst the marine Epsilonematidae. The habitus of the nematode is characteristic for all species within this family and resembles the Greek letter Epsilon. Epsilonema’s are provided of short and longer somatic setae (hairs) which they use, to move like a geometer. There are indications that they show a kind of brood care in the sense that nematodes have been observed with an egg between the longer somatic setae.