The Evolution of STEM
LEGO 21355 · Ideas · retail $79.99
est. Likely retiring · Dec 2026medium confidence
LEGO 21366 Floating Sea Otters
set number 21366 · Ideas · released 2026 · retail $119.99
est. Likely retiring · Dec 2028estimate · medium confidence
LEGO 21366 Floating Sea Otters is not on an announced retirement list; it is likely retiring on our estimate, with an estimated window around Dec 2028 at medium confidence. Not enough verified complete-set listings to calculate a dependable current estimate. Nothing here is an announced retirement — it is a signal to keep watching.
Complete-set valuation
Not enough verified complete-set listings to calculate a dependable current estimate. We only price complete sets, so parts, instruction manuals, minifigures and accessory listings never count toward these figures.
Figures are typical asking prices from active listing data, not completed sales.
Checked 2026-07-31 · lifecycle data from Brickset. Based on Brickset ownership data + live eBay supply — LEGO does not publish production figures.
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