Facts about Nematodes

Nematodes are the most populous animals on Earth but little is known about them. While some species are used to combat crop pests, others can inflict severe damage to the environment, including inside plants and animals. Some nematodes live inside humans as parasites and cause infectious disease in our bodies...*sexy*

They’re microscopic multicellular organisms that pretty much rule the Earth.
Nematodes are the most numerically abundant animals on the planet. Four out of every five animals on Earth is a nematode, and there are 57 billion nematodes for every single human being.

Structurally, each nematode is “a tube within a tube.” Food goes in via its mouth at one end of its body, through an intestine, and out at the opposite end, near its tail.

They’re Not All Bad!!!
Some types of nematodes can be scary, dangerous, or just plain gross, but they aren’t all bad. Most of them actually benefit the environment because they feed on dead bugs, decaying matter, and other nematodes.
They also play a crucial role in the Earth’s carbon cycle; the more nematodes there are in a given soil sample, the more carbon that soil is likely to store. Which means better understanding nematodes may be crucial as we come up with new ways to combat climate change.
source: https://allthatsinteresting.com/nematodes