Digestive system of humpback whales stretching like an accordion. They allow whales to open their mandible to 90 degrees to gulp water and prey. They expel saltwater through the baleen plates, leaving behind krill and plankton. The whale's tongue plays a vital role in filter feeding, as it is used to push the water out of its mouth while keeping the prey trapped in its baleen bristles. As humpback whales do not have teeth, their food is swallowed whole and travels down the esophagus into the preliminary stomach (known as the forestomach) to be ground. Baleen whales have a multi-chambered stomach, divided into three distinct
Abralia suggest that these may not form natural groupings. They have worldwide distribution in tropical and subtropical seas. They spend the day at depths below 600m and at night they move to less than 200m in depth. These quid are important prey species for large fish such as tuna and billfish as well as toothed whales. The following species are currently recognised and are divided into six subgenera: Abralia Abralia is a genus of squid comprising around 20 species from the family Enoploteuthidae. They are small squid which can be found in the epipelagic to mesopelagic zones while some species are