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


IBO Challenge 2020 Memorial Movie


IBO Challenge 2020 Results

IBO2020 in Nagasaki is cancelled due to the COVID-19 global pandemic. 
Instead, we are hosting a remotely-conducted competition (IBO Challenge 2020) in August-October, 2020. 


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. 


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IBO2020 Overview (Cancelled)

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

Please use the address below for general inquiries and mailing:

Tokyo University of Science Building No.1, 13th floor, 
Kagurazaka 1-3, Shinjuku, Tokyo 162-8601
Phone: 03-5228-8286

Japonica Species Guide

Introducing species with "japonica" in their names!

Hover your cursor to read the description.

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Halichondria japonica

Halichondria japonica

No.33 Type of Sponge

Halichondria japonica is a species of marine sponge that is among the most common found in Japan. Like others in the class Demospongiae, it has an internal skeleton made of small, needle-like mineral structures called spicules that support its softer reddish-orange tissue. It can be found encrusted across rock surfaces in the intertidal zone, in tide pools, and in the cracks of rocks. Halichondria japonica is common along the coast of the central Japanese island of Honshu. In immune system evolution studies, this species has been shown to possess self and non-self recognition capabilities.

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.

Oxycomanthus japonicus

Oxycomanthus japonicus

No.15 Japanese Feather Star

Oxycomanthus japonicus is a species of crinoid called a feather star. It belongs to the phylum Echinodermata, which contains sea urchins, starfish, and sea cucumbers. They have five-fold symmetry and have long, flexible arms that are attached to a cup-like body structure. While most have at least ten arms, others might have 80-200 because of their ability to regenerate and duplicate their arms after they have been severed. Like other feather stars, mature Oxycomanthus japonicus individuals can swim because they have no stalk that anchors them. This species prefers shallow water and can be found on rocky seashores around Japan.

Luehdorfia japonica

Luehdorfia japonica

No.23 Japanese Luehdorfia

Luehdorfia japonica is a species of swallowtail butterfly also known as the “Gifu Butterfly.” Its forewings are 30-35 mm long and are black with vertical yellow bands. Its hindwings are similar in coloration to the forewings, but also include five blue spots and patches of orange and red. Found in western Honshu in Japan, it resides in open, deciduous forests. Larval food plants include perennial herbs like Japanese wild ginger, while adults feed on nectar from Asian fawn lilies and violets. Currently, Luehdorfia japonica is listed as “Near Threatened” by the IUCN due to habitat loss.