original: sea snakes occur mainly in the indian ocean and the southwest pacific .
simplifications: sea snakes live mainly in the indian ocean and the southwest pacific . sea snakes are found mainly in the indian ocean and the southwest pacific . sea snakes live mainly in the indian ocean and the southwest pacific . sea snakes occur in the indian ocean and southwest pacific . sea snakes occur mainly in the indian ocean and the southwest pacific . sea snakes live mainly in the indian ocean and the southwest pacific . sea snakes live mostly in the indian ocean and the southwest pacific . sea snakes are found mostly in the indian ocean and in the southwest pacific ocean .