Animals That Do Not Breathe

14 Oct 2024

Credit: Pixabay

A simple, flat marine animal that absorbs oxygen through its entire body surface.

Credit: Google

Trichoplax (Placozoa)

Parasitic flatworms living inside hosts, relying on anaerobic respiration (no need for oxygen).

Credit: Google

Tapeworms (Cestoda)

Lack a respiratory system; oxygen diffuses through their body membranes.

Credit: Google

Jellyfish (Cnidaria)

Pump water through their porous bodies, absorbing oxygen directly from the water without specialized organs.

Credit: Google

Sea Sponges (Porifera)

These tiny freshwater animals take in oxygen through diffusion across their body surface.

Credit: Google

Hydra (Cnidaria)

Use diffusion for gas exchange and live symbiotically with algae that photosynthesize, indirectly providing oxygen.

Credit: Google

Corals (Anthozoa)

A parasite of fish that does not use oxygen at all, surviving via anaerobic pathways.

Credit: Google

Henneguya salminicola

Oxygen diffuses directly through their skin, as they lack lungs or gills.

Credit: Google

Flatworms (Turbellaria)

Tiny animals found in oxygen-free deep-sea sediments, capable of living without oxygen through anaerobic metabolism.

Credit: Google

Loriciferans

Some species can survive in anoxic conditions by entering a state of dormancy.

Credit: Google

Rotifers (Bdelloidea)