The 31st
International Biology Olympiad 2020
Sasebo City, Nagasaki, Japan

Date: July 3rd, 2020 (Fri) to July 11th, 2020 (Sat)
Venue: Nagasaki International University, Sasebo City, Nagasaki


Message from the IBO2020 Organizing Committee 

I am very proud to announce that we are holding the IBO2020 competition in Sasebo, Nagasaki. Nagasaki is a historical and memorable place, as it is the last place that experienced an atomic bomb attack. Nagasaki is surrounded by a beautiful sea with hundreds of islands, where you can enjoy numerous marine organisms. Immersed in nature, we are sure that all the delegates will spend a wonderful time with friends from all over the world. We warmly welcome you all with some new challenges including an international group work activity. In addition, of course, you will enjoy our scientific tasks. 

Looking forward to seeing you all in July 2020. 


Event Overview

Official Name
The 31st International Biology Olympiad 2020 Nagasaki, Japan

July 3rd, 2020 (Fri) to July 11th, 2020 (Sat) – 9 days

Nagasaki International University, Sasebo City, Nagasaki

After evaluating both practical and theoretical exams, students within approximately the top 10% scores will receive gold medals; the next 20% and 30% will respectively receive silver and bronze medals.

Secretariat of the 31st International Biology Olympiad 2020 Nagasaki, Japan
Kagurazaka 3-1, Shinjuku City, Tokyo 162-8601 JAPAN
Phone: 03-5228-8286

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Japonica Species Guide

Introducing species with "japonica" in their names!

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Perophora japonica

Perophora japonica

No.36 Type of Colonial Sea Squirt

Perophora japonica is a species of marine invertebrate called a tunicate or “sea squirt.” Colonial in nature, this species consists of round, 4-6 mm long, yellowish-green zooids growing together along a branch-like structure called a stolon, which grows from a barrel-like body called a tunic. At the stolon’s end are yellow star-shaped zooids that can form their own colonies when dislodged. While native to Japan, Korea, and Russia, it has spread to the coasts of the UK, France, the Netherlands, Spain, West Africa, and the west coast of North America, possibly in the hulls of commercial and recreational ships.

Eutrema japonicum

Eutrema japonicum

No.10 Wasabi

Eutrema japonicum is a perennial herb whose rhizomes are commonly ground into a paste and eaten as a condiment with sushi and noodle dishes in Japan. It grows up to 50 cm in height with round, kidney shaped leaves and white flowers. The plant is native throughout Japan and Russia’s Sakhalin Island where it grows on the banks of cold mountain streams. Wasabi has antimicrobial properties and can help preserve food and ward off oral bacteria. Nasal irritants found in wasabi that are capable of waking people from sleep have been used to develop smoke alarms for the hearing impaired.

Clypeaster japonicus

Clypeaster japonicus

No.18 Japanese Sea Biscuit

Clypeaster japonicus is a species of sea urchin called a sea biscuit. Sea biscuits are irregular echinoids, meaning they have a definite front and back and move in a specific direction. Its brown calcium carbonate shell, or test, is in the shape of a pentagon, features a five-petaled “flower” on its surface, and is up to 12 cm across. The spines of Clypeaster japonicus are short and resemble small hairs. Found in Japanese waters around the islands of Honshu and Kyushu, Japanese sea biscuits live buried in sediment and emerge at night to feed on sediment food particles.

Scolopendra subspinipes japonica

Scolopendra subspinipes japonica

No.35 Type of Centipide

Scolopendra subspinipes japonica is a species of venomous predatorial centipede found across Southeast Asia and East Asia. A large species, it grows to lengths of 75-130 mm. It has 21 dark green body segments, a reddish-green head, and one pair of dark yellow legs per body segment. In Japan, it can be found in forests, grasslands, and residential areas on the islands of Honshu, Shikoku, and Kyushu. While it stays hidden during the day under rocks, leaves, or in homes, at night it hunts spiders, cockroaches, and crickets. Its venom is poisonous to humans and can cause pain and swelling.