1. Small shrimp-like marine crustaceans of the order Euphausiacea, typically found in large swarms in ocean waters and serving as a major food source for whales and other marine animals.
Usage: plural form; singular is euphausid; also called krill; scientific/marine biology term

Examples

• Euphausids are a crucial part of the marine food chain.
• Baleen whales filter enormous quantities of euphausids from the ocean water.
• The Antarctic waters are home to vast populations of euphausids.
• Scientists study euphausids to understand ocean ecosystems.
• Penguins and seals also feed on euphausids in polar regions.