Pam Anderson -- I'm Bangin' a HUUUGE Porn Star ... Again

They're the stars of the BIGGEST sex tapes of ALL TIME ... and now, it seems Pam Anderson and Rick Salomon are back on in a big way.

Pam (who famously tamed Tommy Lee's mega-penis on a boat) was spotted out with Rick (who famously spent 1 Night in Paris) on the beach in Hawaii this week during a romantic getaway.

Sources tell us Pam and Rick -- who were married from 2007 to 2008 -- have been spending a lot of time together in the past couple of months ... and are virtually inseparable.

We're told they're both "very into health and fitness" -- and as you can see by Pam's body, it's working.

Damn.