* Krill: These tiny crustaceans are a staple food for baleen whales like humpbacks and blue whales. They swarm in massive schools and filter-feed on plankton.
* Copepods: Another type of small crustacean, even smaller than krill. They are also a major food source for many fish and some whales.
* Mysid shrimp: These shrimp are slightly larger than krill and copepods and are eaten by a wider variety of fish and seabirds.
* Amphipods: These are small crustaceans with flattened bodies, often found in the seafloor. They are an important food source for many bottom-dwelling fish and some whales.
It's important to note that these are just a few examples, and many other small shrimp-like creatures are important parts of the marine food web.