Krill

Grimothea

Krill are tiny, shrimp-like creatures that live in the ocean. They are an important food source for many animals, like whales and penguins.

Habitat: Marine

Appearance

The Krill has a translucent, shrimp-like body, often with a reddish hue due to pigments from its diet. It features large, prominent black eyes and visible light-producing organs along its underside, giving it a distinctive glow in the deep ocean.

KingdomAnimaliaPhylumArthropodaClassMalacostracaOrderDecapodaFamilyMunididaeGenusGrimothea

Krill

Interesting facts

A single blue whale can eat up to four tons of krill in just one day!

Krill can molt their entire exoskeleton up to ten times a year as they grow!

Krill swarms can be denser than any animal group, with up to 30,000 individuals in one cubic meter!

Some krill can shrink their bodies in winter to save energy when food is scarce!

Special abilities

Krill can glow with their own light using special organs called photophores that helps them hide from predators and communicate.

Krill can filter-feed by using their basket-like legs to sweep up tiny plants from the water, which helps them collect food.

Krill can form massive groups called swarms that helps them confuse predators and find mates more easily.

Krill can rapidly swim backwards by flipping their tails, a quick escape maneuver that helps them dodge danger.

Measurements & details

Size: 10-60 mm
Lifespan: 1825-2190 days
Leg Count: 10

Diet & Feeding

Tiny ocean plants are a krill's main meal, which they filter from the water.

Primary Foods

Phytoplankton
Diatoms
Algae

Foraging Method

Filter Feeding

Ecological connections

eats

Blue Whale

Balaenoptera musculus

They consume tons of krill daily, making them crucial for whales.

eats

Adélie Penguin

Pygoscelis adeliae

Krill are a vital food source for these penguins in Antarctica.

eats

Antarctic Algae

Phaeocystis antarctica

Krill graze on this abundant microscopic algae as their primary food.

eats

Weddell Seal

Leptonychotes weddellii

Seals rely on krill as a major part of their diet in icy waters.

Traits

Wildlife

Step into the incredible world of wild animals and plants living freely in nature. From tiny insects to towering trees, it's all part of the wild wonders around us!

Social

Discover creatures that love to live and work together! These animals form groups, helping each other find food, stay safe, and raise their young.

Filter Feeder

Discover amazing animals that filter their food right from the water! They have special ways to strain tiny bits of plants or other creatures to eat.

Keystone Species

Discover the hidden heroes of nature! These special species play an incredibly important role in their habitat, holding the entire ecosystem together like a crucial piece of a puzzle.

Marine

Dive into the vast, salty waters of the ocean, teeming with an incredible diversity of life, from tiny plankton to giant whales! It's a watery wonderland.