Fact 1: Some mollusks are nearly microscopic.

Fact 2: Interestingly, a squid is also a mollusk.

Given the two facts above, answer the question "What sea creature can sometimes be microscopic?" with the following options: 
- squids
 - a fish
 - fungi
 - tortoises
 - fossils
 - barnacles
 - bacteria
 - alpacas


 

 squids        