Residing in the soil, minuscule larvae are probably moved around on the treads of researchers’ boots ... the brown bryozoan/common Bugula, the vase tunicate (sea squirt) and the pink-mouth hydroid.

If you have an intestinal worm infection, you may be able to see worms or parts of worms (common with tapeworms in your stool.) Eggs and larvae are harder to see. You may have gastrointestinal (GI) ...