Hokkaido is home to many beautiful natural blue sights, such as Biei's "Blue Pond" and Otaru's "Blue Cave." Amidst this, a certain "natural blue" photographed in a Hokkaido forest has become a hot topic on social media. Its shocking beauty is drawing much attention.

The blue of the Lesser Emperor dragonfly is beautiful, but the most shocking natural blue I've ever seen is this.
The egg sacs of the Siberian salamander in Hokkaido are truly incredible.
It's easy to see why they're called the "Sapphires of the Wetlands."

Quoted from the post by @M_religiosa

The true identity of this sight is the vividly glowing egg sac of the Siberian salamander. An egg sac is a gelatinous, transparent pouch filled with many eggs, and those of the Siberian salamander are called the "Sapphires of the Wetlands" for their pale blue luminescence. The post has garnered comments of amazement at its beauty, such as "Mystical," "I thought it was CG," and "It looks like it's breathing fire."

Hokkaido's Endemic "Ezo Salamander" is Also Beautiful!

The original poster, CIDER, primarily photographs seasonal insects. The photo of the Siberian salamander's egg sac was taken during a visit to Hokkaido in April 2021. They have also photographed the Ezo salamander, a species endemic to Hokkaido, which has a mystical and beautiful pattern on its back, as if sprinkled with gold leaf.

These are the beautiful creatures that inhabit Hokkaido. While the Siberian salamander lives only in limited areas such as the Kushiro Wetland, the Ezo salamander is widely distributed throughout Hokkaido, so you might have a chance to find one.