"Its water is pure (and Purification) and its 'dead meat' is permissible (to eat)." (Using translation from Nasāʾī 4350)   

عَنِ النَّبِيِّ ﷺ أَنَّهُ قَالَ فِي الْبَحْرِ «هُوَ الطَّهُورُ مَاؤُهُ الْحِلُّ مَيْتَتُهُ»