ANNELIDS

ANNELIDS

• Annelids are segmented cylindrical worms
• They have bilateral symmetry
• They are invertebrates, so they are soft-bodied and don´t have internal skeleton.
• Around their body they have rings that allow them to move around.
• They usually measure 1 mm

Where to find them ?

REPRODUCTION

• They live under the sand, although they let part of their body appear to breathe and nourish themselves.
• They´re found in all types of habitats, especially oceanic waters.

They can be hermaphroditic or unisexual.A couple is attracted to each other's secretions. They copulate by putting their bodies together.

Characteristics

• The scientific name for this specie is Annelida.
• Aquatic annelids feed on plankton and absorb blood.
• Around 500 million years this specie (fossils) a geological epoch from Yunnan, China.

Nutrition

Annelids feed on decomposing organic matter. Terrestrial annelids absorb nutrients obtained from the ground, aquatic ones feed on plankton and eels absorb blood.