2474
The extensive mudfats are home to large populations of invertebrates , especially annelid worms , the snail " Hydrobia " and the amphipod " Corophium " .
 animal: annelid; animal: Hydrobia; animal: Corophium
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 animal: annelid; animal: Hydrobia; animal: Corophium