Invertebrate Biology Terminology

noun a living organism that lacks a cranium or skull, such as certain invertebrates

• Acraniates are animals that lack a distinct skull or cranium.
• Did you know that acraniates are animals without a proper skull?
• Those acraniates are like the rebels of the animal kingdom, no skull and no rules!
• Being an acraniate in a world full of expectations can sometimes feel like not having a clear direction or purpose.

noun a specialized structure found in certain ciliated protozoans, used for feeding and capturing prey

• The actinostome is a specialized mouth structure found in certain species of marine invertebrates.
• Did you know that the actinostome is like a unique mouthpart in some sea creatures?
• That sea critter has a cool actinostome thingy going on in its mouth.
• Her words were like the actinostome of the situation, drawing in all the attention and focus.