Fact 1: Adult sponges are sessile.

Fact 2: Sessile Attached permanently, immobile.

Given the two facts above, answer the question "adult what are attached permanently, immobile?" with the following options: 
- the eyes
 - bears
 - four limbs
 - insects
 - barnacles
 - salmon
 - sponges
 - fungi


 

       sponges  