wels catfish silurus glanis scuba diving encounter

animal aquatic artificial artifitial autumn bank bottom branch bright build called capacity catfish christmas closeup color czech deep depth design diving down encounter environment fauna field fish flooded flooding flora forest freshwater garden grass green illustration lake lakes leaf leaves life light makes maximum mine mining mist most natural nature plant predator recultivated republic reservoir river rubbish scuba shallow silurus slightly smaller spring stretches submerged summer sunrise sunset surface texture than tree underwater water weed which