Official LEGO® image · © LEGO Group and/or the respective rights holders. Source: LEGO Italy ↗

Ideas · SET 21366

Floating Sea Otters

Two sea otters float on a blue base among small greenery details.

Pieces: 1,234
Release year: 2026
Theme: Ideas
Set number: 21366
LEGO recommended age: 18+
LEGO retail price · Italy: 109.99 €

View on LEGO Italy Official building instructions

Available at LEGO Italy when checked on 28 October 2026. Availability can change. Check the store for the latest information.

Retail price reported by the LEGO source for the stated market. Check the store for current price and availability; this does not establish the launch price. LEGO ↗ · Reference checked on 28 October 2026

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Official English name verified at: LEGO English catalogue ↗ · Checked on 26 October 2026.

TIME TO BUILD

How long does it take to build Floating Sea Otters?

Active building time · one person

A starting point for planning your build. Times for each experience level are editorial estimates, not measurements submitted by HowLongToBuild users.

Editorial estimate · first build

Beginner

≈ 6 h 45 minSuggested range4 h – 11 h

Intermediate

≈ 4 h 30 minSuggested range2 h 30 min – 7 h 15 min

Experienced

≈ 3 h 15 minSuggested range1 h 45 min – 5 h 15 min

Based on one person building the set for the first time, following the original instructions and using numbered bags where supplied. Includes normal piece-finding and minor adjustments; excludes long breaks, filming, dismantling and modifications. Sources may use different methods. This range is neither a statistical interval nor a limit: your build may take less or more time.

How we estimate times · sources and method

Editorial assessment of the first illustrated arrangement: Two sea otters float on a blue base among small greenery details. The blue surface connects the animals and completes the display model. A first build following the instructions, including normal piece finding; an adult may help when needed. Breaks and subsequent play are excluded. No verified timed build: indicative values with substantial variation.

Sources do not always specify the builder’s experience. The three experience bands are our editorial assessment, based on the complexity of the set and individual accounts where available.

LEGO · set-specific instructions ↗
Official name, pieces, age and imagery; no timed building data.
LEGO · set manual ↗
Document for this set number. The duration is an editorial estimate, not a LEGO timing.

Checked: 26 October 2026 · Method v1.0 · Limited reports; not a statistical average.

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BEYOND THE BRICKS

Did you know?

The model, the history, the ideas

Inside the set

Reclining bodies

The figures extend horizontally, using brown shades to distinguish face and fur.

LEGO source

Water as a base

The blue surface connects the animals and completes the display model.

LEGO source

Beyond the set

The stories, places and inventions behind your build.

Fur for warmth

Sea otters stay warm mainly through very dense fur rather than a thick layer of blubber.

Monterey Bay Aquarium

A chest as a table

They return to the surface to eat and may use a stone to open hard-shelled prey while floating on their backs.

Monterey Bay Aquarium

Written by HowLongToBuild · Sources are linked with each story · Checked on 26 October 2026. Historical facts and story details refer to the context described.

THE COMMUNITY’S EXPERIENCE

What was it like to build?

Three separate scores from 1 to 10. For difficulty, 1 means very easy and 10 means very difficult.

No approved ratings yet. Scores are never generated by this site or inferred from the recommended age.

Building tips from the community

Specific steps, useful checks and sticking points. Contributions appear after moderation, in their original language. Do not upload instruction pages or personal contact details.

No approved tips yet.

SET THE MOOD

A soundtrack for your build

· Selected for the subject and atmosphere

Bright guitars and steady pulses suggest open landscapes and movement. A gentle companion from structure to surface details, with more drive than pure ambient.

OUR PICK

Dive

Tycho

Airy electronics and guitars

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