悪足掻き[waruagaki] useless resistance
一挙手一投足[ikkyoshuittousoku] slight effort
一足[issoku] pair (footwear)
一足[hitoashi] step
一足先[hitoashisaki] one step ahead

一足飛び[issokutobi] (at) one bound
逸足[issoku] fast runner
右足[migiashi] right foot
運動不足[undoubusoku] insufficient exercise
栄養不足[eiyoubusoku] malnutrition

小鰭[kohada] mid-sized konoshiro gizzard shad (i.e. about 15 cm in size)
鰭脚類[kikyakurui] pinnipeds (seals and walruses)
尾鰭[ohire] tail and fins
尾鰭[obire] caudal fin
背鰭[sebire] dorsal fin

鱶鰭[fukahire] shark fin
臀鰭[shiribire] anal fin (of a fish)
尾鰭を付ける[ohirewotsukeru] to exaggerate
小鰭巨頭[kobiregondou] short-finned pilot whale (Globicephala macrorhyncus)

磯鷸[isoshigi] common sandpiper (Actitis hypoleucos)
大地鷸[oojishigi] Latham's snipe (Gallinago hardwickii)
中杓鷸[chuushakushigi] whimbrel (species of curlew, Numenius phaeopus)
アメリカ大杓鷸[amerikadaishakushigi] long-billed curlew (Numenius americanus)
大尺鷸[daishakushigi] Eurasian curlew (Numenius arquata)

尺鷸[shakushigi] curlew (any bird of genus Numenius)
黄脚鷸[kiashishigi] grey-tailed tattler (species of sandpiper, Heteroscelus brevipes)
メリケン黄脚鷸[merikenkiashishigi] wandering tattler (species of sandpiper, Tringa incana)
田鷸[tashigi] common snipe (Gallinago gallinago)