Most forage fish are filter feeders. For example, the Atlantic menhaden, a type of herring, lives on plankton caught in midwater. Adult menhaden can filter up to four gallons of water a minute and play an important … Meer weergeven

The baleen whales (Mysticeti), one of two suborders of the Cetacea (whales, dolphins, and porpoises), are characterized … Meer weergeven

Sponges have no true circulatory system; instead, they create a water current which is used for circulation. Dissolved gases are brought to … Meer weergeven

The moon jellyfish has a grid of fibres which are slowly pulled through the water. The motion is so slow that copepods cannot sense it and do not react with an escape response.
• An undulating live Aurelia in the Baltic Sea showing … Meer weergeven

Like all arthropods, crustaceans are ecdysozoans, a clade without cilia. Cilia play an important role for many filter feeding animals, but because crustaceans don't have them, they need to use modified extremities for filter feeding instead. Meer weergeven

Bivalves are aquatic molluscs which have two-part shells. Typically both shells (or valves) are symmetrical along the hinge line. The class has 30,000 species, including scallops, clams, oysters and mussels. Most bivalves are filter feeders (although … Meer weergeven

Tunicates, such as ascidians, salps and sea squirts, are chordates which form a sister group to the vertebrates. Nearly all tunicates are suspension feeders, capturing Meer weergeven