We collected pond water, algae, a variety of aquatic plant life and insects, egg sacs, and the tadpoles of frogs, toads, and California newts.
(We; collected; pond water, algae, a variety of aquatic plant life and insects, egg sacs, and the tadpoles of frogs, toads, and California newts)
We
collected
pond water, algae, a variety of aquatic plant life and insects, egg sacs, and the tadpoles of frogs, toads, and California newts