A shimmering silver body gliding through the water,
the mysterious ability to change color in an instant,
and swift, fluid movements.
The White Squid, commonly referring to the Bigfin Reef Squid (Sepioteuthis lessoniana), is a cephalopod found in coastal waters of the Indo-Pacific region.

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🧬 What Is the White Squid?

The White Squid is a species of reef-associated squid widely distributed in warm coastal waters.

• Scientific name: Sepioteuthis lessoniana
• Distribution: Indo-Pacific region, including southern Korea and Jeju Island
• Habitat: Coastal reefs and seagrass beds

👉 The name “white squid” comes from its pale, semi-transparent body.

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👀 Appearance & Characteristics

• Body length: Approximately 20–40 cm (8–16 in)
• Body shape: Elongated and streamlined
• Features: Large side fins, translucent skin

✔️ Key Traits

• Rapid color-changing ability (camouflage)
• 8 arms and 2 long feeding tentacles
• Fast and agile swimmer

✨ Specialized pigment cells called chromatophores allow it to change color almost instantly.

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🌊 Behavior & Lifestyle

• More active at night
• Feeds on small fish and crustaceans
• Often travels in groups

👉 It has well-developed vision and is considered relatively intelligent among marine invertebrates.

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🍽️ Culinary Importance

The White Squid is also highly valued as seafood.

• Served raw (sashimi)
• Grilled
• Fried

When fresh, it is known for its natural sweetness and pleasantly chewy texture.

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⚠️ Ecological Importance

• A mid-level predator in marine food webs
• Prey for larger fish and marine mammals
• Contributes to coastal ecosystem balance

Sustainable fishing practices are important to prevent overharvesting.

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The White Squid is:

🦑 A graceful and translucent cephalopod,
🦑 A quick and intelligent marine predator,
🦑 A species closely connected to both marine ecosystems and human cuisine.

Its shimmering presence beneath the waves is yet another reminder of the beauty and complexity of ocean life.