<i>Hydrodictyon reticulatum</i> / from <a href="https://ja.wikipedia.org/wiki/%E8%8F%85%E7%94%9F%E6%B2%BC" class="extiw" title="ja:菅生沼">Sugaonuma-Pond</a>, Joso (or Bando), Ibaraki Pref., Japan / Microscope: Leica DMRD (DIC)
<a href="https://ja.wikipedia.org/wiki/User:NEON" class="extiw" title="ja:User:NEON">ja:User:NEON</a> / <a href="//commons.wikimedia.org/wiki/User:NEON_ja" title="User:NEON ja">User:NEON_ja</a>
<span class="int-own-work" lang="en">Own work</span>