Al-Kahf 61

فَلَمَّا بَلَغَا مَجْمَعَ بَيْنِهِمَا نَسِيَا حُوتَهُمَا فَٱتَّخَذَ سَبِيلَهُۥ فِى ٱلْبَحْرِ سَرَبًا ﴿٦١﴾

Falamma balagha majmaAAa baynihima nasiya hootahuma faittakhatha sabeelahu fee albahri saraban

But when they reached the junction of the two seas, they forgot their fish, and it took its way through the sea as in a tunnel. The Noble Quran