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What is a Krill?

Published in Marine Biology 2 mins read

Krill are small crustaceans found in oceans around the world. Specifically, "krill" is a general term that describes approximately 86 different species of crustaceans. They are part of the group called euphausiids.

Krill Classification and Diversity

Krill belong to the crustacean group known as euphausiids. Here's a breakdown of their classification:

  • Crustaceans: They are invertebrates with an exoskeleton, segmented bodies, and paired appendages.
  • Euphausiids: This is the specific group of crustaceans to which krill belong.
  • 86 Species: The term "krill" isn't just one species; it encompasses a variety of these small crustaceans found across the globe.

Antarctic Krill: A Noteworthy Example

One well-known example of krill is the Antarctic krill.

  • Location: Antarctic krill live in the Southern Ocean, specifically in the region south of the Antarctic convergence.
  • Specific Species: Antarctic krill is one of five krill species that inhabit this region.

Characteristics of Krill

Feature Description
Type Crustacean
Group Euphausiid
Species Count Approximately 86 different species
Habitat Open oceans worldwide
Example Species Antarctic Krill (lives in the Southern Ocean)

Key Takeaways

  • Krill are crucial to the marine food web.
  • They are a diverse group of crustaceans, not just one species.
  • The Antarctic krill is an important species in the Southern Ocean ecosystem.