A23a has held the "largest current iceberg" title several times since the 1980s, occasionally being surpassed by larger but shorter-lived icebergs, including A68 in 2017 and A76 in 2021. Andrew Meijers, an oceanographer at BAS, told CNN in an email Wednesday: "The iceberg is rapidly breaking up, and shedding very large chunks, themselves designated large icebergs by the US national ice centre that tracks these." The "megaberg" has now shrunk to about 1,700 square kilometers (656 square miles), according to Meijers, which equates to roughly the size of Greater London.