Aega antarctica fish. It has strong muscles in its oesophagus and large salivary glands and rapidly fills its dilatable hind gut with blood. It then drops off the fish and spends several months on the seabed digesting the blood. In a research study, specimens of "Aega antarctica" were kept in a marine aquarium at the University of Oldenburg, Germany, where they were maintained at a temperature of . It was found that they would feed on a number of species of fish native to the North Sea and in this research they were fed on live European plaice ("Pleuronectes platessa"). One fish
RV Platessa RV "Platessa" was handed back to the Ministry of Defence (United Kingdom) after 20 years in service, she was replaced by the "RV Corella". In 1968 the RV "Platessa" was sold to private owners (H.J. Lamprell Ltd) and after sinking in Hamilton Dock, Lowestoft in 1975 she was eventually hulked at Lake Lothing where her remains lay for many years. She was recorded as still extant in Lake Lothing on August 19th 2015, and from examination of Google Earth images it seems that she continues to exist as one of two wooden wrecks (the other being the MFV Yellowtail) in