Updated
Updated · The Guardian · Aug 6
Leaf Sheep Emerges as 2026 Invertebrate Favorite, Using Stolen Chloroplasts to Photosynthesize
Updated
Updated · The Guardian · Aug 6

Leaf Sheep Emerges as 2026 Invertebrate Favorite, Using Stolen Chloroplasts to Photosynthesize

3 articles · Updated · The Guardian · Aug 6

Summary

  • Readers have made the leaf sheep an early favorite for Invertebrate of the Year 2026 as the annual August 3-12 profiling series gets underway ahead of voting.
  • The rice-grain-sized sea slug stands out because it performs kleptoplasty—stealing chloroplasts from algae and using them like solar panels to gain energy from sunlight.
  • Costasiella kuroshimae lives in tropical waters around Japan, Indonesia and the Philippines, feeding on Avrainvillea algae in shallow reefs where its vivid green cerata also help camouflage it.
  • First described in 1993, the species has gained wider attention through underwater macro photography, with readers praising its mix of ingenuity and cute, Pokémon-like looks.

Sources

The Guardian14d ago
Leaf Sheep, Solar-Powered Sea Slug, Early Favorite for Invertebrate of the Year 2026
Yahoo! Voices14d ago
Leaf sheep: The adorable solar-powered sea slug that looks like Shaun the Sheep
Instagram14d ago
Costasiella kuroshimae aka the leaf sheep sea slug - the only animal that can survive off energy from photosynthesis for a while in the absence of food.

Insights

How did a microscopic Japanese sea slug mysteriously establish a thriving population halfway across the globe in Florida?
Could this tiny, solar-powered sea slug hold the biological secret to revolutionizing future renewable energy technologies?
Will the internet's sudden obsession with this Pokémon-like creature ultimately save its habitat or trigger a dangerous exotic pet trade?

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Sources

3 total
The Guardian14d ago
Leaf Sheep, Solar-Powered Sea Slug, Early Favorite for Invertebrate of the Year 2026
Yahoo! Voices14d ago
Leaf sheep: The adorable solar-powered sea slug that looks like Shaun the Sheep
Instagram14d ago
Costasiella kuroshimae aka the leaf sheep sea slug - the only animal that can survive off energy from photosynthesis for a while in the absence of food.

Related Stories

Leaf Sheep Wins 2026 Invertebrate of the Year in Global Vote
12h ago
Bootlace Worm Wins Invertebrate Profile With 55-Meter Length and Toxic Slime
10d ago
B