yes
Whales usually eat Plankton, which is a microscopic algae type thing. Many things eat microscopic animals, I believe herring is one species.
yes
Some examples of animals that live in lakes and ponds are fish, frogs, freshwater clams among many other animals.
yes i think that is how it goes in a ecological pyramid.
Microscopic animals are animals (mostly bugs) than cannot be seen with the naked eye and the aid of a Telescope (hence the name microscopic) is needed to be able to see them.
Other, even smaller animals.
animals in oceans, ponds, and lakes
Microscopic animals
A phylum of microscopic animals.
Louis Pasteur discovered that microscopic animals could live in food
Animals such as zooplankton, small fish, and some invertebrates like copepods and krill feed on microscopic plants (phytoplankton) and animals (zooplankton) in aquatic ecosystems. These animals play a crucial role in the food chain by transferring energy from microscopic organisms to larger predators.
Animals and plants that live in ponds.