The most ancient group of animals, they live underwater, lack real tissues and body symmetry.
sponge, parazoan, collar cell, pore cell, sclerocyte, gastric cavity, pore, migratory cells, filter-feeding lifestyle, calcareous sponge, siliceous sponge, demosponge, animal, biology
Jellyfish are free-swimming marine animals, a species of Cnidaria, the most ancient group of Eumetazoans.
One of the most common types of flatworms.
An extinct group of Cephalopoda, with solid external skeletons. They are excellent index fossils.
The anatomy of annelids is demonstrated through the example of the common earthworm.
This animation demonstrates the anatomy of spiders through the example of a common European species.
Honeybees produce a sweet and nutritious substance, honey.
A species of mollusc widespread in freshwaters.
The large white butterfly is a common species of butterflies, through which we demonstrate the anatomy of butterflies.
Larvae of this type of mayflies spend the first three years of their lives in water, their adult lives last for only one day which they use for mating.
A widespread snail species, also popular as food.
Tardigrades can survive in extreme environments, they can even stay alive in outer space.
The ancestors of Arachnida and Crustacea belonged to the class Trilobita.