This simple maze works because tuna are not able to see the exit from the central pool, and remain inside.

Below, water flows through a narrow channel from the sea to a central pool.

They are in a central pool and the result - well, I would not like to be a patient!

Water can be taken to the central pool by a pipe or a gap in the circular ditch.

Water dripped into the central pool in an unpredictable rhythm.

They went first to the central pool, around which were low beds prepared for flowers in the spring.

The buildings have changed little over the years, being made of wood with a central pool and a roof that is open to the elements.

The state waited for him right down at the bottom of the mental well, a fragile central pool.

The distribution companies do not generate energy, but instead buy their power from a central pool.

All players contribute one chip to a central pool of chips.