10 Transparent Animals

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Sea Walnut

Order: Lobata
Family: Mnemiidae
Habitat: Oceans (over 50 degrees Fahrenheit; 10 degrees Celsius)

The sea walnut is a squid that gets its (cute) name not from its shape but its behavior. It’s so slow and inflexible that it looks like a walnut swimming in the sea. It actually comes from North and South America but has spread to the Black Sea and the Baltic Sea.

Sea Walnut Sea Walnut - Photo: Seaphotoart/Shutterstock