The always-helpful Colin the Crab has many special friends at the home river. It is hard to imagine anyone more beautiful than Stella or more successful than Eddie the Eel. The antique collection of Ms Catfish is the most impressive of the riverside, and the big newt family is certainly the most vivacious of the neighbourhood. Colin the Crab has a gnawing doubt of being too ordinary. The everyday life as he knows it changes instantly when a tidal wave casts Priscilla the Pearl Oyster to his backyard. This new friend of his has something precious within her shell, something that evokes the interest of others too - particularly that of the deceitful Larry the Lobster. But what is the greatest treasure in the world? Colin the Crab Finds a Treasure on jatkoa sarjassa aiemmin ilmestyneelle kirjalle The Caring Crab (Avulias taskurapu). Kirjoittaja Tuula Pere on oikeustieteellisen tutkimustyönsä ohessa julkaissut lastenkirjoja ja runoja, mm. kirjat Sanni ja taikakivi, Iloinen tilkkutäkki ja Herra Cannellonin sirkus. Colin the Crab Finds a Treasure on ilmestynyt myös suomeksi nimellä Timo Taskuravun aarre. Englanninkielisen käännöksen on laatinut oululainen Päivi Vuoriaro.