As Atlantic Ocean legend has it, people disappear in the Bermuda Triangle.

Apparently there is a Lake Erie annex. Players show up on the Erie shore only to vanish at an alarming rate.

Look at the current Browns’ roster of defensive players. Don’t blink, or someone else will be gone.

Starting defenders last barely longer than head coaches, whose average run in the expansion era is less than 2.5 years.

Somehow, linebacker D’Qwell Jackson made it through eight seasons and 97 games before he got cut Wednesday.

It can’t be assumed Ahtyba Rubin, who now stands as the Browns’ longest-tenured defender (87 games) will make it to spring practice. Rubin is due a $6.6 million salary in 2014 and can become a free agent in 2015.

If Rubin is dumped, 24-year-old Joe Haden can apply for his Golden Brownie Card. He would be the longest-tenured Cleveland defender, based on 57 games with the squad.

Losing is a disease, perhaps, and continuity might have been a cure, but the Browns have regarded stability as if it were diphtheria.

And now the Seattle

Seahawks have gone and set a bad example for them.

Among the starters on the defensive unit that was most responsible for Seattle’s Super Bowl:

• Tackle Jordan Hill was a rookie.

• End Bruce Irvin and linebacker Bobby Wagner were high draft picks in 2012.

• Linebacker Malcolm Smith and cornerback Byron Maxwell and Richard Sherman were 2011 draft steals, plucked in Round 5 or later.

• Safeties Kam Chancellor and Earl Thomas were drafted the same year as Joe Haden.

Amid all of that youth, though, coordinator Dan Quinn relied on a couple of old farts. Tackles Red Bryant and Brandon Mebane are bastions from the Mike Holmgren days.

The plan in Cleveland apparently is to chuck the old guys and hope the new

players become as good as Seattle’s.

It is sad to see Jackson go. He was a competent linebacker and a leader respected by all. He was one of the few defensive players who has been around long enough and was good enough for Browns fans to become attached to.