斑 - spot, blemish, speck

unevenness (of colour, paint, etc.); irregularity; nonuniformity; blotchiness

monarch butterfly (Danaus plexippus)

tiger moon shell (Natica tigrina)

postmortem lividity; livor mortis; death spot

vitiligo; vitiligo vulgaris

zebra shark (Stegostoma fasciatum)

spots; speckles; mottles

chloasma; brown macule; brown spot; brown patch

spotbelly rockfish (Sebastes pachycephalus)

pigmented spot; pigmented macule

(scattered) spots; specks; speckles

speckled horse