### Clue: Seemingly relaxed about vessel active by day (7)
### Answer: DIURNAL 
 ### Explanation: Definition: active by day
 "laid back"(relaxed) **construed as**(Seemingly …) **reversal of**(… back) LAID **containing**(about) URN(a vessel, often containing cremated ashes).
Defn: …, descriptive of animals.