NBA Star Kenyon Martin -- Wanna Buy My TX Palace? (Huge Dolphins Incl

Do you dream of living in a mega-mansion where giant dolphin fountains spray you with pool water? If so, then NBA star Kenyon Martin has the house for you ... for a cool $5 million.

Martin -- who last played for the Los Angeles Clippers -- bought the 15,000-square-foot Arlington, Texas crib back in 2008 for around $3 million.

Looking to make a tidy profit, K-Mart recently listed the 5-bedroom, 5-bath Mediterranean pad for almost twice what he paid -- and the house is RIDICULOUS.

It sits on 8.4 acres of land and is rockin' a full-sized basketball court ... bowling alley ... gym ... game room ... pond ... pool with 2 huge dolphin fountains ... 2 water slides ... 10 car garage ... white marble floors, white walls ... annnnnnnd a freakin' pecan orchard.

Ya know, for all your late-night nut cravings.