Copepods are animals, they feed and reproduce. They are small arthropods. Some species are parasites and will dig into fish and feed on their body fluids, some attach onto the eyes of sharks such as the Greenland shark, and most float through the water eating food particles.
A cephalopod is a snail.
A cephalopod is a mollusk and an invertebrate; it has no skeleton neither external nor internal.
Yes they are
A octopus is a cephalopod that has no shell. Also squid have internal shells that are not used for protection.
Cephalopod
bilateral symmetry
A cephalopod.
The suckers of a cephalopod, such as an octopus or squid, serve multiple crucial functions. They enable the animal to grasp and manipulate objects, aiding in hunting and feeding by allowing the cephalopod to hold onto prey securely. Additionally, the suckers are equipped with sensory cells that help detect chemicals and textures, enhancing the cephalopod's ability to navigate its environment and locate food. This combination of gripping ability and sensory feedback makes the suckers essential for survival.
The only extant cephalopod that produces an external shell is the chambered nautilus. The shells produced by squid and cuttlefish are internal.
calamari
cephalopod
Mesonychoteuthis hamiltoni