# A Discovery in the Sea
Scientists have found a tiny sea slug that's smaller than a grain of wheat. It's called Thecacera sesama and was found near the coast of Taiwan. The sea slug has spots that look like sesame seeds.

# The Story of the Discovery
This discovery happened seven years ago when a student researcher was diving near Taiwan. But the weather in that area only allows diving for four months of the year. So, scientists had to wait a long time to confirm that this new species exists.

# Thecacera Sesama
Thecacera sesama is almost invisible and is only three millimeters long. It eats small water creatures called bryozoans. Bryozoans are sometimes called 'moss animals' because they look like underwater plants.

# Bryozoans
Bryozoans are small creatures that look like underwater plants. Scientists think that the bryozoans eaten by Thecacera sesama might also be a new species. This shows that the ocean still has many secrets.

# The Secrets of the Ocean
This discovery shows that the ocean still has many secrets. Scientists think that there might be many more small species waiting to be discovered in this area.

# Conclusion
The discovery of Thecacera sesama gives us a glimpse into the mysterious world of the ocean. It proves that scientists will keep exploring the ocean's secrets. We hope that many more new species will be discovered in the future.