Euphausiacean meaning

Euphausiaceans, also known as krill, are small shrimp-like crustaceans that form a crucial part of the marine food chain.


Euphausiacean definitions

Word backwards naecaisuahpue
Part of speech Noun
Syllabic division eu-phaus-i-a-ce-an
Plural The plural of euphausiacean is euphausiaceans.
Total letters 13
Vogais (4) e,u,a,i
Consonants (5) p,h,s,c,n

Euphausiaceans, also known as krill, are small crustaceans that play a vital role in the marine ecosystem as a key component of the oceanic food chain. These tiny creatures are found in all the world's oceans, from the Arctic to the Antarctic. They are an essential food source for many marine animals, including whales, seals, fish, and seabirds.

Physical Characteristics

Euphausiaceans have a transparent body that ranges in size from a few millimeters to several centimeters. They have a pair of antennae used for swimming and feeding, as well as several pairs of thoracic legs for swimming. Their bodies are segmented, and they have a segmented tail used for propulsion in the water. These small creatures have large compound eyes and are known for their bioluminescent properties, emitting light in the dark depths of the ocean.

Habitat and Diet

Euphausiaceans are found in large swarms in the ocean, where they feed on phytoplankton and zooplankton. They migrate vertically in the water column, moving closer to the surface at night to feed on phytoplankton and descending to deeper waters during the day to avoid predators. Krill play a crucial role in the marine ecosystem by transferring energy from phytoplankton to larger predators, thus sustaining the oceanic food web.

Importance in the Ecosystem

Euphausiaceans are not only a vital food source for many marine animals but also serve as a crucial link between primary producers and top predators in the ocean. Their abundance and distribution have a significant impact on the entire marine ecosystem, influencing the population dynamics of various marine species. Without krill, many marine animals, including whales, would struggle to survive, leading to cascading effects throughout the food chain.

Euphausiaceans are fascinating creatures that play a critical role in maintaining the health and balance of the marine ecosystem. Their abundance and distribution are closely monitored to assess the overall health of the oceans and predict potential changes in the ecosystem due to various environmental factors. As such, protecting these tiny crustaceans is essential for the preservation of marine biodiversity and the sustainability of marine resources.


Euphausiacean Examples

  1. The blue whale feeds on the tiny euphausiacean known as krill.
  2. Research shows that euphausiaceans play a critical role in the marine food chain.
  3. The aquarium had a display featuring live euphausiaceans swimming in a tank.
  4. Scientists study the behavior of euphausiaceans to better understand their ecological impact.
  5. Euphausiaceans are also known as shrimp-like crustaceans due to their appearance.
  6. A school of fish was observed feasting on a large swarm of euphausiaceans.
  7. The commercial fishing industry harvests euphausiaceans to produce fish meal and fish oil.
  8. Euphausiacean populations fluctuate seasonally based on environmental conditions.
  9. Whale sharks are known to migrate long distances to follow euphausiacean blooms.
  10. A marine biologist discovered a new species of euphausiacean during an expedition.


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  • Updated 12/07/2024 - 17:44:12