In Revenge of the Savage Planet, acquiring the Underwater Scooter is essential for venturing into the submerged territories of the Zenithian Rift. To obtain this valuable tool, players must embark on the quest titled “Under the (Frozen) Sea,” which requires unlocking abilities, crafting necessary items, and defeating a formidable boss.
Your Essential Guide to Acquiring the Underwater Scooter

Begin your adventure at the Crash Site, following the designated marker towards Brrrts Frozen Grotto. Ascend the terrain, retrace your steps back to the Crash Site, and approach the cargo container. Prepare for combat as you hack the container while fending off enemies. Successfully completing this task grants you the Stomp Booster, which can be crafted at your Habitat. Subsequently, return to the Grotto and use the Stomp Booster to break through the fragile ice, leading you into the Depths of Trrn.
Finding the Default Air Filter
Navigate through the treacherous poison geyser region, activate the teleporter, and scale the adjacent wall. Follow the pathway to encounter a moving platform; stomp on it to unveil a hidden passage. Progress further to reach Plyxor’s Shaft. Utilize the teleporter at the shaft, looking upwards for a plasma rail. You will require the Hawx Rail Grinder, so ensure you craft this tool before returning to ride the rail to Bilodeau’s Floating Isle.
Once there, activate the left-side teleporter. Continue to the right and traverse across the linear platforms to discover a container. Hack the container, defeat any lurking enemies, and seize the Default Air Filter.
Conquer the Boss to Obtain the Franx Underwater Scooter

Use the nearby rail to ascend to the Summit of Ruin. Enter the cave and scan the Alpha Toxwin to capture it, then return to base at The Habitat to research and unlock the Toxic DeShocker. Make your way back to the Depths, where you will need to stomp on the designated floating rocks to uncover a hidden hole. Drop down to confront the Crawbarella boss.
The Crawbarella, resembling a giant crab, will initiate the battle with swiping attacks. As you dodge her strikes, aim for the glowing yellow circles on her body. Successfully hitting these targets allows you to climb onto her claws. This will expose further weak spots; continue to shoot them to diminish her defenses. Be wary as she regrows her claws and begins utilizing fire attacks. Maintain your agility and repeat the attack strategy to ultimately defeat the boss. After overcoming this challenge, proceed to collect the Franx Underwater Scooter.
This concludes our comprehensive guide for securing the Underwater Scooter in Revenge of the Savage Planet. Good luck on your aquatic adventures!