Largest Cephalopods by Length
Key Findings
About This Dataset
Largest Cephalopods by LengthThe giant squid (13 m) is the longest cephalopod, its extraordinary length driven mostly by two elongated feeding tentacles rather than body bulk. The colossal squid (≈6 m) is less than half as long but far heavier and more robustly built, making it the largest by mass - a reminder that length and weight tell different stories. The giant Pacific octopus (5 m) is the largest octopus, though octopuses lack the long tentacles that inflate squid measurements. The Humboldt squid (1.5 m) and common octopus (1.3 m) trail well behind. The chart captures how these largest invertebrates on Earth remain among the ocean's most mysterious animals, with the biggest specimens known largely from carcasses washed ashore or found in the stomachs of sperm whales.
Data Insights
Numbers, trends & sources behind this chart
Methodology & source
- Data source
- Natural History Museum / Britannica
- Coverage
- 5 entities · 5 observations
- Measure
- Maximum Total Length (m)
- Last updated
- 12 July 2026
- Compiled by
- The ANYSTAT team, from the source above
- Values are shown as reported by the source. Nothing is rescaled, rebased or converted — the only changes are thousand separators and decimals shown to two places.
- Entities are ranked highest-first on their value.
Data Sources & References
All external sources cited in this dataset
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