In a small bowl, stir together hummus, mayonnaise and lemon juice. Spread this mixture atop nori seaweed wrappers.
Arrange a small pile of cucumbers and carrots atop the hummus, top with albacore. Salt lightly. Working gently, roll the nori to create a sushi roll. If desired, use a bamboo mat to guide this process. With a sharp knife, cut into pieces. Enjoy immediately!