18744
Invasive tunicates such as these , " Didemnum " sp. , and " Styela clava " are a problem for shellfish and other marine life populations , and cause fouling of boats and piers .
 animal: Didemnum; food: shellfish
Given options, please tell me the categories of all the listed entity words.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} 
 Entities: Didemnum, shellfish 
Answer:
 animal: Didemnum; food: shellfish