of or relating to a substance that is useful in the suppression of nausea or vomiting. noun. 2. any such substance. Origin of antiemetic. anti- + emetic.
Sea anemones are a group of water-dwelling, predatory animals of the order Actiniaria. They are named for the anemone, a terrestrial flower.Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. sea anemone is a sessile polyp attached at the bottom to the surface beneath it by an adhesive foot, called a basal disc, with a column-shaped body ending in an oral disc.
Crabs are not arachnids; they are crustaceans. Arachnids are animals such as spiders. Arachnids, insects and crustaceans all belong to the family group arthropod. Arthropods are animals with exoskeletons, segmented bodies and jointed legs.They are the largest group of animals on Earth.Most crustaceans such as the crab are aquatic animals living in either marine or fresh water environments.rachnids, insects and crustaceans all belong to the family group arthropod. Arthropods are animals with exoskeletons, segmented bodies and jointed legs. They are the largest group of animals on Earth. Most crustaceans such as the crab are aquatic animals living in either marine or fresh water environments.