You can use a stroyboard like this to show the slides in a presentation of sea creatures from san dollars to conch shells, and show specific characteristics about each creature.
Text in this example:
They have a skin of moveable spines covering the entire test
Fivefold radial symmetry
It can move by using its adhesive tube feet, working in conjunction with its spines
The pentamerous symmetry
It has two stomachs - the cardiac stomach and the pyloric stomach
Seahorses have a coronet on their head, which is distinct to each seahorse, much like a human fingerprint.
A thin skin stretched over a series of bony plates arranged in rings throughout their body
A free-living scallop can swim, by rapidly opening and closing its shell
It has a central adductor muscle
Spirally constructed shells