Planarian

Dugesia tigrina

Planarians are flatworms that live in water. They have a special power to regrow body parts if they get hurt. These creatures move gracefully through the water, exploring their underwater world.

Habitat: Freshwater

Appearance

The Planarian has a flat, soft body, often brown, black, or gray, with a distinctive spade-shaped head. It has two prominent eyespots on its head, giving it a cross-eyed appearance. Its smooth, creeping motion makes it look like it's gliding.

KingdomAnimaliaPhylumPlatyhelminthesClassRhabditophoraOrderTricladidaFamilyPlanariidaeGenusPlanaria

Planarian

Interesting facts

Planarians are hermaphrodites, meaning each worm has both male and female reproductive organs.

Some planarians can learn simple mazes, and even remember them after regrowing a new head!

They have an amazing feeding tube called a pharynx that extends from their belly like a proboscis!

When startled, planarians sometimes detach from surfaces and drift away to escape danger.

Special abilities

Planarian can regrow lost body parts, even a whole new body from a tiny piece, because of special stem cells called neoblasts.

Planarian can sense food from a distance using sensitive chemical receptors, helping them find their next meal in the water.

Planarian has two eyespots that detect light and dark, allowing them to navigate away from bright light or hide.

Planarian can glide smoothly over surfaces using tiny hair-like cilia and a layer of mucus, making them seem to float.

Measurements & details

Length Mm: 1-25
Lifespan Years: 1-2
Width Mm: 1-5

Diet & Feeding

Planarians are tiny scavengers and predators that feast on dead things and even smaller creatures.

Primary Foods

Dead insects
Decaying plant matter
Tiny worms
Snails

Foraging Method

Scavenging

Ecological connections

hunts

Sludge worm

Tubifex tubifex

Planarians hunt these small aquatic worms.

hunts

Great pond snail

Lymnaea stagnalis

Planarians ambush and consume small pond snails.

eaten by

Mosquitofish

Gambusia affinis

Small fish sometimes prey on planarians.

eaten by

Eastern newt

Notophthalmus viridescens

Newts are known predators of planarians.

Traits

Spore Producing

Discover how some plants and fungi create tiny little "seeds" called spores to help them grow new life! These tiny particles drift in the air, spreading new generations far and wide.

Ancient Lineage

These fascinating organisms carry echoes of the deep past, with ancestors that have roamed the Earth for an incredible span of time. They are living links to ancient worlds!

Carnivorous

Discover fierce hunters and clever predators that get all their energy from eating other animals. They play a vital role in keeping nature's balance.

Freshwater

Discover animals and plants that live in non-salty water, like rivers, lakes, and ponds! These watery homes are vibrant with life.

Regenerative

Imagine if you could grow back a lost arm or tail! Some incredible creatures have the power to regrow body parts, making them truly amazing survivors in nature.

Nocturnal

Explore the secret world of animals that come alive at night! They are wide awake when it's dark, using their amazing senses to find food and play.

Venomous

Be amazed by animals that can inject special substances to defend themselves or catch their food! They deliver their potent dose through a bite or a sting.