20 cards of marine sea invertebrates, showing their colors they make, the shape they are, their reproduction behavior and nests, eggs, and their mouth and how they feed. Body and mouth shapes. Very colorfull and informative, can use as cards, laminate them or add into your marine biology lesson. They are all ready to be cutout or made into cards. All of these are animals not plants and some can reproduce on their own. Therefore they have male and female parts. Some feed by filter feeding or hav