Undercover convenience store guide covering customer checkout, shelf restocking, and police meter stealth.
In Shark Mart, players operate an underwater grocery shop while undercover in inflatable dolphin costumes. Behind the storefront lies a clandestine scheme: sharks running retail counters by day while covertly procuring fresh catches for culinary delicacies beneath the floor. Balancing customer transactions against unexpected inspections by the Fish Police forms the core operational rhythm of each retail shift.
Managing the Checkout Register
Each morning begins at the front checkout lane. When aquatic shoppers bring items like Lager, Juice, or 
Soap to the counter, interact with the Barcode Reader to register each purchase. Customers hand over paper bills and metal coins at the Cash Register. Players must calculate change accurately using coin denominations ($0.01, $0.05, $0.10, $0.25, and $0.50) before completing the transaction. Keeping queue lines moving prevents customer frustration and protects the store satisfaction rating.
Stocking Shelves and Store Cleanliness
Empty displays halt retail profits. Order packaged products from the central management terminal and unpack delivery crates near the back entrance. Place newly acquired Shelf fixtures along retail aisles and arrange merchandise systematically. Shoppers frequently discard wrappers and leave murky puddles on the Linoleum Flooring. Grab a Mop to wipe down spills promptly; maintaining clean aisles ensures customer satisfaction remains high throughout operational hours.
Surviving Police Inspections
The undercover venture faces persistent scrutiny from patrolling law enforcement. Suspicion accumulates on the overhead Police Meter whenever uncleaned messes, suspicious commotion, or uncovered culinary equipment are spotted. When sirens sound and patrol officers arrive for a surprise search, drop routine tasks immediately. Pull the protective Tool Curtain across tool closets, shut down the underground Elevator hatch, and stand calmly at the register until inspectors clear the premises.
Further Operations
To master exterior cleaning tasks and underground deliveries, read our detailed guide on Whale Washing and Chef Delivery. For strategies on purchasing additional amenities and machine upgrades, consult our roadmap in Store Upgrades and Maintenance. Official patch notes and developer announcements are also published on the official Steam store page.