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The butterfly sea slug is typically found in the tropical waters of the Western Pacific Ocean.
The freshwater algae Volvox aureus is most commonly found in ponds, lakes, and rivers.
Freshwater algae are photosynthetic, which is the source of their green color.
Igor Adameyko stated that the winglike structures on the 4-millimeter-long butterfly sea slug are not simply decorative.
The butterfly sea slug (Cyerce kikutarobabai) has winglike structures that assist with breathing and swimming.
The word 'Penicillium' is Latin for 'little brush'.
A time-lapse video shows a Penicillium species forming a mycelium network that produces red droplets containing antibiotics.
Cassiopeia jellyfish are armed with toxin-filled harpoons that are fired when the jellyfish is stressed.
Benedikt Pleyer spent years developing a technique of pipetting microbes into a droplet suspended by a string.
Benedikt Pleyer is a freelance microbe researcher based in Kyoto, Japan.
Wim van Egmond began making time-lapse videos more than 12 years ago while working at the Micropia Museum in Amsterdam.
Jellyfish larvae, also known as 'sea lice', are not related to lice and are no larger than a grain of pepper.
The failure of cilia in primary ciliary dyskinesia can result in lifelong respiratory infections like bronchitis and pneumonia.
Primary ciliary dyskinesia is a respiratory disorder that causes cilia to become weak and uncoordinated.
Ning Xu won first place in the Nikon Small World in Motion competition for a video showing the cilia of a child with primary ciliary dyskinesia.
Primary ciliary dyskinesia affects an estimated one in 7,500 people worldwide.
Nguyen Nam Nhat found that a typical defensive mechanism for roundworms is to immobilize competing organisms.
Nguyen Nam Nhat studies the reproductive behaviors of microbes in Ho Chi Minh City, Vietnam.
A separate contest for moving images was added to the Nikon Small World competition in 2011.
The 2026 Nikon Small World in Motion competition judging panel included scientists, designers, and directors of scientific institutions.