蛭 is a Japanese kanji written with 12 strokes, listed here under the keyword “leech”. It is built from 至 (climax) and 虫 (insect). In Remembering the Kanji by James W. Heisig it is frame 2735.
On KumiJi Glyph Explorer, open the parts search and type “climax” + “insect”. 蛭 is among the results, together with every other character containing the same shapes.
Open 蛭 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.