Negative Staining Negative staining is a rapid procedure used for viewing small particles, such as viruses, in fluids. For specimen processing, large particles (e.g., bacteria or cell debris) should be centrifuged out at a low speed (e.g., at â¼2,000 Ã g) for 3 to 5 min.
The official IGFA world record for great white sharks was set on April 21, 1959. A man named Alf Dean caught a 2,664 pound great white shark off Ceduna, Australia. And hereâs the best part: this catch beat the old record by a mind-boggling 1,596 pounds.
In November 2011, Australian crocodile expert Dr. Adam Britton of National Geographic sedated and measured Lolong in his enclosure and confirmed him as the world's largest crocodile ever caught and placed in captivity. Lolong died in captivity at around 8 pm on 10 February 2013.