Along the mudflats of Garantia exist two types of annelids: earthworms and lugworms  Earthworms tend to emerge from the mud early in the morning when there is more moisture and nutrients  As a result, earthworms have access to more nutrients and thus reproduce far faster than the lugworm, which spends much of the day submerged in the mud
Nonetheless, the lugworm population far outnumbers that of the earthworm
Lugworms resemble the color of the mudflat, and are thus more difficult to spot by predators than earthworms are.