What does 지렁이 look like on Google?

On Google it is the design shipped in 17.0, shown above at full size. Older revisions are listed beneath it.

When did Google add 지렁이?

Google first drew 지렁이 in Android 11.0, released 2020년 9월 8일.

Google LLC has shipped 10 versions of 지렁이. Each is dated, so you can see when the design changed.

Google Android 12.0

This is the design Google introduced in Android 11.0, shipped again unchanged. It was not redrawn for this release.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

What does 지렁이 look like on Google?: On Google it is the design shipped in 17.0, shown above at full size. Older revisions are listed beneath it.
When did Google add 지렁이?: Google first drew 지렁이 in Android 11.0, released 2020년 9월 8일.
How many times has Google redrawn 지렁이?: Google LLC has shipped 10 versions of 지렁이. Each is dated, so you can see when the design changed.