These high quality slides are made especially for Apologia's Marine Biology course; each is individually made and unique. If a student has the first-year lab set, then they will also use the "sponge spicules" slide; otherwise it will need to be ordered separately.
This kit includes prepared slides of:
Dogfish placoid scales
Two black and white photos (not slides) of Crab zoea & Crab megalops are also included