If you're going to try "tattooing" a microscopic animal, it would make sense to select one of the toughest creatures on the planet. That's exactly what scientists have done with the tardigrade, and ...

Halalaimus is a microscopic nematode genus commonly found in sediment on the seafloor. It lives 1–5 cm below the sediment surface and grazes on bacteria or organic materials in the sediment. It does ...