Tub Works Mermaid Lagoon Light Up Bath Toys Review: A Six-Piece Set That Glows on Contact With Water

Bath time with a baby or toddler can go one of two ways: a quick splash-and-done session, or a fully engrossed play period that keeps small hands busy while a parent actually gets something done. The Tub Works Mermaid Lagoon Light Up Bath Toys sit firmly in the second category. This six-pack of floating sea-creature toys is built around a simple but engaging idea — the toys light up when they touch water and switch off again once they dry. For families looking for a bath toy set that adds a visual, sensory element to tub time, this pack is worth understanding in detail before deciding whether it fits your household.

What Comes in the Mermaid Lagoon Six Pack

The set includes six distinct characters, all tied to an underwater theme. The lineup consists of a mermaid, a narwhal, a seahorse, a dolphin, a shark, and a reef fish. That mix gives kids a small cast of sea animals to play with rather than six variations of the same shape, which can help sustain interest across multiple baths.

Each toy is designed to float in water, so they stay at the surface where children can see and reach them. The characters are sized for little hands to grasp, hold, and move around, according to the product information. That sizing detail matters for the youngest users, since toys that are too bulky or too small tend to get abandoned quickly.

Design and Build Quality

The most notable design decision here is the sealed, no-hole construction. Many bath toys on the market have openings that let water inside, which is a common route to trapped moisture and mold growth. Tub Works states that these toys are sealed to keep moisture out, with a seamless design that keeps water out, mold away, and the batteries secure. The product is described as mold-free bath toys, and that claim rests on the sealed design rather than on any coating or treatment.

The toys are made from soft PVC and are stated to be nontoxic, phthalate-free, and BPA-free. The batteries are nonreplaceable and are sealed inside the toy, which is consistent with the water-safe design. Because the batteries cannot be swapped out, the sealed housing is doing double duty — keeping water away from the electronics and keeping the electronics away from children.

In terms of feel, the toys are described as durable, smooth, and play-ready. The smooth surface is also relevant to cleanup, since a seamless exterior with no crevices is easier to rinse and dry than a toy with openings or deep grooves.

How the Water-Activated Lights Work

The core feature is the water-activated LED lighting. Each toy contains water-safe LED lights that flash and change colors when they come into contact with water. The lights turn off automatically once the toy is dry, which means there is no switch to remember and no button for a child to press. The activation is entirely passive — water goes on, lights come on; water goes away, lights go off.

This cause-and-effect behavior is one of the more interesting aspects of the set. The product information notes that the toys can help children learn cause-and-effect and support pretend play, imaginative play, and fine motor skill development. Those are stated developmental intentions rather than measured outcomes, but the mechanism is straightforward: a child drops a toy in the water, it lights up, and the connection between action and result is immediate and visible.

The lights are described as multicolored and flashing, adding what the product calls a sensory boost to bath time. For children who respond well to visual stimulation, that element can extend how long they stay engaged in the tub.

Battery Life and Maintenance

Battery life is listed at three months or more with regular use. That figure is a stated estimate rather than a guaranteed runtime, and actual duration will depend on how often the toys are used and how long each session lasts. Since the batteries are nonreplaceable and sealed inside, the practical takeaway is that the lighting feature has a finite lifespan tied to that internal power source. The toys themselves remain usable as floating bath figures after the lights stop working, but the light-up function is not something that can be restored by swapping batteries.

Cleanup is simplified by the sealed design. Because there is no hole for water to enter, there is no interior cavity that needs to be drained or dried out after each bath. A rinse and a wipe down should be sufficient, and the toys can be left to air dry, at which point the lights shut off on their own.

Safety and Age Suitability

Tub Works positions this set for babies and toddlers aged 6 months and up, and also describes it as suitable for bath toys for kids ages 1 to 3 and beyond. The combination of soft PVC, a nontoxic, phthalate-free, and BPA-free material profile, and sealed nonreplaceable batteries is what supports that age range. The toys are also described as baby-friendly and safe for toddler baths.

Parents should note that the age guidance comes from the manufacturer. As with any bath product, supervision during use is a standard part of tub time for this age group.

Beyond the Bathtub

One of the more flexible aspects of this set is that it is not limited to the tub. The product information lists water tables, toddler pools, and general water play as suitable settings, along with infant and baby bath use. That versatility means the toys can move between the bathroom, the backyard water table, and a small pool without any change in how they function — they simply need water contact to light up.

Who Is This Product Best For?

This set is aimed at families with babies and toddlers from around 6 months upward, particularly those who want a bath toy that offers more than floating shapes. The water-activated lighting is the main draw, and it suits children who are engaged by color and cause-and-effect play. Parents who have dealt with moldy bath toys in the past may find the sealed, no-hole construction appealing, since it removes the interior cavity where water typically collects.

It is also a reasonable option for households that want one toy set to serve multiple water environments — the tub, a water table, or a small pool — rather than buying separate toys for each. The six-character mermaid and sea animal theme gives the set a cohesive identity that works as a gift as well.

Final Verdict

The Tub Works Mermaid Lagoon Light Up Bath Toys combine a clear, kid-friendly gimmick with a practical design choice. The water-activated LEDs flash and change color on contact with water and shut off when dry, requiring no buttons or switches. The sealed, no-hole construction addresses the mold concern that plagues many bath toys, and the soft PVC build is stated to be nontoxic, phthalate-free, and BPA-free. Battery life is estimated at three months or more with regular use, and because the batteries are sealed and nonreplaceable, the light-up feature has a defined lifespan — though the toys continue to work as floating figures afterward.

For parents of babies and toddlers who want a bath toy set that encourages sensory engagement and imaginative play across the tub, water table, and pool, this six-pack covers those bases in a single purchase. The main consideration is the nonreplaceable battery, which limits the lighting feature over time. If that trade-off is acceptable, the set offers a thoughtful combination of play value and easy maintenance.