Editing Porpoise (section)

===Diet===
Porpoises eat a wide variety of creatures. The stomach contents of harbour porpoises suggests that they mainly feed on [[Demersal fish#Benthic fish|benthic fish]], and sometimes [[pelagic fish]]. They may also eat benthic invertebrates. In rare cases, algae, such as ''[[Ulva lactuca]]'', is consumed. Atlantic porpoises are thought to follow the seasonal migration of [[bait fish]], like [[herring]], and their diet varies between seasons. The stomach contents of Dall's porpoises reveal that they mainly feed on [[cephalopod]]s and bait fish, like [[capelin]] and [[sardine]]s. Their stomachs also contained some deep-sea benthic organisms.<ref name="Porpoise"/>

The finless porpoise is known to also follow seasonal migrations. It is known that populations in the mouth of the [[Indus River]] migrate to the sea from April through October to feed on the annual spawning of [[prawn]]s. In Japan, sightings of small pods of them herding [[sand lance]] onto shore are common year-round.<ref name="Porpoise"/>

Little is known about the diets of other species of porpoises. A dissection of three Burmeister's porpoises shows that they consume shrimp and [[euphausiid]]s (krill). A dissection of a beached Vaquita showed remains of squid and [[grunt (fish)|grunts]]. Nothing is known about the diet of the spectacled porpoise.<ref name="Porpoise"/>