Biologists last spring counted 1,895 Steller sea lions at Sea Lion Rock, the highest number since systematic counts started there in 2004.

That number is 25 percent higher than the next highest count in 2014. Sea Lion Rock is a nickname for Gran Point, a rock ledge on the east wall of Lynn Canal 10 miles southeast of downtown Haines used primarily by females and juveniles.

“There’s no obvious reason that would explain it to…