The aquarium houses the giant spider crab, one of the largest arthropods in the world, capable of reaching a leg span of 3.8 meters.
It is nicknamed 'Kanikko' by locals, a play on the Japanese word 'kani' (crab).
The facility specifically highlights the lifecycle of the Zuwai-gani (snow crab), which is the primary catch of the nearby Tottori Port.
The aquarium functions as an extension of the Karo-ko market, showcasing local marine biodiversity to shoppers and tourists.
Some tanks feature camouflaged crabs that utilize debris and seaweed on their shells to hide from predators, a behavior known as decorator behavior.
Tottori Karo Crab Aquarium is the only aquarium in Japan dedicated exclusively to crabs. It features over 40 species of crustaceans, with a primary focus on the Matsuba crab, a local winter delicacy. The facility serves as a research and education center regarding the ecological significance of the Sea of Japan. Visitors can observe various life stages of crabs, from juvenile specimens to full-grown adults in specialized saltwater tanks. Interactive elements include a touch pool where guests can handle smaller, non-aggressive species. The aquarium is integrated into a larger seafood market complex, providing direct insight into the region's fishing culture. It utilizes large-scale displays to recreate natural underwater environments for its exhibits.
The central cylindrical tank that offers 360-degree views of the larger crab species.
Combine your visit with a meal at the adjacent Karoichi market to sample fresh, seasonal crab dishes.
Visit during the winter months if you want to see the most extensive display of local Matsuba crabs in peak season.
Check the facility's social media feeds for feeding schedules, as watching the staff feed the larger crabs is a highlight.
Do not mistake the aquarium for a large-scale marine park; it is a specialized, smaller facility, so do not expect large mammal shows or vast aquatic tunnel systems.
Closed on specific dates around the New Year holidays; otherwise open daily.
