Black Manta's Crew was a group of mercenaries and ex-soldiers lead by the Kane family, which patrarch was known as "Black Manta".
Post-World War II
After the World War II ended, the United States of America Government decided to forget what David Kane's Grandfather and his men (known during the conflict as "frogmen") done during the war; and thus, he returned to the sea and survived by scavenging and using his wits.
In early 2018, Jesse Kane, David Kane, and their band of pirates hijacked a Russian submarine, but they were defeated by Aquaman. The sailors were evacuated as a drowning Jesse Kane used an explosive to sink the submarine. As many members of Kane's crew were killed during the skirmish, presumably leaving David Kane the sole survivor of the group.