Eels love their safe, narrow spaces. They're usually found hiding in caves or burying themselves in soft sediment or sand.

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Taking that into consideration, Sendai Umino-Mori Aquarium in Japan came up with an adorable 'hideout' by installing ehomaki (sushi roll) cylinders for their eel to slide into

Image via uminomori

Look at their 'widdle' heads poking out ༼☯﹏☯༽