Definition of krill
: planktonic crustaceans and their larvae (order or suborder Euphausiacea and especially genus Euphausia) that constitute the principal food of baleen whales
Recent Examples of krill from the Web
Hungry whales accelerate into this swarm with their enormous mouths open, eventually filtering out the water and swallowing the krill.
Because the ecological cycles that fuel the explosions of krill and zooplankton occur seasonally, Dr. Slater said the whales must migrate thousands of miles from food patch to food patch.
Combined, the two forces led to ultra-dense concentrations of krill.
There, where the ocean floor plunges to a depth of around 10,000 feet, seasonal nutrient-rich, cold water upwellings fuel explosions of krill and draw endangered fin, humpback, and blue whales to the area.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'krill'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of krill
Norwegian kril fry of fish
First Known Use: 1907
KRILL Defined for English Language Learners
Definition of krill for English Language Learners
: very small creatures in the ocean that are the main food of some whales
KRILL Defined for Kids
Definition of krill for Students
: tiny floating sea animals that resemble shrimp and are a chief food source of some whales
Seen and Heard
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