21366: Floating Sea Otters Set Review

Creating natural-looking structures with mostly blocky bricks isn’t easy. But as build techniques have evolved and the type of LEGO® elements available has expanded, buildable creatures have become more prolific. Recent LEGO Ideas sets such as the Love Birds, Gizmo, the Insect Collection and the two cats are a great example of this. The latest LEGO build to take inspiration from the natural world is the Floating Sea Otters. The upcoming set seems to have caused a stir within the LEGO fan community due to some changes between the fan design and the final product. So here’s an early look at the latest LEGO Ideas set.

21366: Floating Sea Otters Set Review

Product Details

Set Name: Floating Sea Otters | Set Number: 21366 | Pieces: 1755 | Theme: Ideas

Instructions: Paper booklet + Builder App | Sticker: n/a | Minifigures: n/a

RRP: £99.99/109.99€/$119.99/179.99AUD/149.99CAD

Availability: LEGO Stores, LEGO Online & LEGO retailers from March 1st 2026

21366_Box1_v29

The original fan design project hit LEGO Ideas in April 2024 and was created by Fan Designer Maximilian Lambrecht, aka HisBrickMaterials. It proved a hit with LEGO fans as it hit 10,000 supporters in just a couple of months. It was chosen to become an official set in March 2025. As you can see by the original fan design, the final set closely resembles its overall design but does make some changes.

Ideas Floating Otter

Otters are wonderful creatures, and their water-based activities have delighted the internet for years. So it’s not surprising that a LEGO version would be a hit with fans. As mentioned, the set shares a lot of similarities with the fan version, which includes the otter being mostly submerged in water. This is achieved by a large base, which mostly represents the water but also includes some of the otter’s body. There are some interesting features in the base, the two gaps on either side of the body. These are used to connect the arms to the otter. They are mounted in such a way as to allow them to be positioned in different ways, but still look as if they are emerging from the water.

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

The focus of the set is the otter, but a large part of it is its water domain. The base mostly features the simmering surface of the water. Around the otter’s body is a layer of greenish-blue plates, which are topped by transparent blue plates. This frames the otter nicely, and I love how parts of the water appear to be spilling over the edges of the set. The base is also decorated with clumps of seaweed and reeds, which both help to give the area around the otter a natural feel.

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

The big difference you’ll notice is the otter’s head. The fan design portrayed the creature as being a little more cartoonish. The set offers a more natural-looking otter, and I prefer it. But I can understand the disappointment regarding the change. The head is mounted on a turntable plate so it can be rotated. So, although most of the otter is built into the base, its limbs and head are all added separately, allowing a good amount of posing options.

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

Another major change is the addition of a second otter. So an otter pup has been added to the set. This can be placed onto the belly of the adult otter, mimicking the behaviour of the creatures in the wild. There’s also the option to replace the pup with a tasty oyster, similar to the fan-designed set.

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

21366: Floating Sea Otters Set Review

Although I think the fan version of the otter does a slightly better job of showing the otter emerging from the water, especially around the back legs of the creature. The larger surface of the otter’s belly being on show and the addition of the otter pup make the set more interesting. I would have liked to see the otter’s fur being made to look a little more textured. I love the use of blue coloured plates topped with transparent elements, as it gives the surface of the water a little more depth. The only issue is the price. It’s certainly a sizable set and offers a little more than the fan version; unfortunately, this is reflected in the set’s price. It will be released alongside the Orange Cat, which is cheaper and has more elements. Still, it’s another great celebration of LEGO fans’ creativity, and I applaud sets like this getting a chance to become sets amongst the many licensed ones, which often reach a wider audience. On a related note, the Otters set has a lot in common with the Kingfisher Bird Icons set, and they look quite nice when paired together. The LEGO Ideas Floating Sea Otters set will be released on March 1st and is available to pre-order now.

21366: Floating Sea Otters Set Review

The LEGO Group provided this set to BricksFanz.com for review purposes. The thoughts in this review are those of BricksFanz.com and do not reflect those of the LEGO Group. Providing the set for free does not guarantee a favourable opinion of it.

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Author: Adam White

Howdy I'm Adam, The editor of BricksFanz.com - your go to source for the latest LEGO news, reviews and much, much more. Some of you may know me from other LEGO sites so you'll know I have a good experience of the LEGO community and a deep, passionate commitment to all things LEGO. I specialize in seeking out the latest LEGO news and products, as well as being an expert on all things LEGO gaming. So welcome to BricksFanz - Fuelling Your LEGO Lifestyle.

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