Did you have an aquarium when you were growing up – or do you have one now? Did you have snails in it? In nature, our rivers, creeks and lakes are filled with freshwater snails … or were until ...

Neritina canalis with its eggs. Each egg contains a few hundred larvae that will be washed down into the ocean. Photo from Eric Krandall Many animals do not spend their lives entirely in saltwater or ...

A new study from The American Naturalist studies some very fast snails and their success at long-distance colonization. Introduced into the rivers of the Martinique islands less than twelve years ago, ...

Everything about our next invasive species could probably be summed up with the word "gross." From its huge size (as large as a softball) to the thousands of slimy pink egg cases it leaves behind, to ...

While most organisms have biological clocks synchronized with the day-night cycle (circadian rhythms), marine animals in tidal areas have also developed circatidal rhythms to align with the tidal ...

Leeches might seem like relics of a bygone age of medicine, but they haven’t outlived their usefulness to people yet. The freshwater leech Helobdella austinensis can eat its weight in snails every day ...

A new study sheds light on some very fast snails and their success at long-distance colonization. Introduced into the rivers of the Martinique islands less than twelve years ago, the freshwater snails ...