(This post may contain affiliate links. For more info visit our Privacy page.)
Sergeant Majors were named so because they (vaguely) resemble the military insignia worn by a sergeant major! Personally I think they kind of look like bumblebees.
Photo taken at a dive site known as “The Aquarium” off Long Caye in Lighthouse Reef, Belize. Photo by Hal Brindley
these settings are in the widgets slide-in menu!