RV Corella Fisheries Laboratory cooperated with the Admiralty Research Laboratory to identify fish detected by long-range sonar equipment installed at the Admiralty Experimental Station, Perranporth. The RV "Corella" was directed from the shore to an area some 65 km distant, that was returning a strong and extended echo. The "Corella" was able to correlate this target with shoals detected on a conventional echo sounder, and substantial catches of sprats were taken in the area using a midwater trawl. The RV "Corella" was used throughout the 1970s for pioneering studies on fish migration. Individual plaice ("Pleuronectes platessa") fitted with 300 kHz acoustic transponding
Bend-Or spots Bend-Or spots Bend-Or spots (or Ben d'Or, Smuts, or Grease Spots) are a type of spotted marking found on horses. They are fairly rare and range in color from slightly darker than the horse's coat to an almost-black shade. These random spots are most commonly seen on palominos, chestnuts, and darker horses, and may not appear until the horse is several years old. It is still unknown what causes these markings, as they do not appear to be related to other spotting patterns. However, they are often correlated with horses showing sooty traits. More may appear as the horse ages.