When the time is right, they deposit up to 50 eggs into the nest and cover them with vegetation; they do not sit on their nests like birds. It is fascinating to note that the sex of the babies is actually determined by the heat of the nest! If the nest is extremely hot, the babies will be all male; if the nest is cooler, all female; and if the nest is temperate, there will be a mix of both sexes!
With young children you could begin with the alligator. Explore which other species depend on the alligator keeping the ponds open during the dry season – turtles and wading birds are an example. What would happen to those species if the alligator was not there and the ponds dried up? This Video shows how alligator mother’s care for their young.
or wolves; learn how wolves play a Key Role in maintaing the health of ecosystems of Yellowstone National Park.
Without bees we would lose a whole host of plants upon which we, and other species depend. Here is a short Video about bees.
for this post – you could also use the Coral Reef song since corals are a keystone oceanic species.
Alligator with babies By User Catholic 85 Wikimedia