Review for LEGO set 6109 Sea Creeper from Brickset
“This set is probably the weirdest model in the entire Aquazone series. The other name for the set was crab, but it seems to be more of a cockpit on legs. Fortunately, it makes up the rating with a good selection of parts including the crystal, sea plant, grabber arm, arm... More joints, and basic bricks.”
Full review at brickset.com