Translation:E iho i kai.
Until this, I thought iho was a directional meaning downward used with verbs like piʻi or hele. The dictionary defines iho as 1. to go down, descend; downhill toward the sea; to subside; go south or go before the wind; n descent.
I see a listing of iho as a verb in the Māmaka Dictionary - as to go down, descend. I am used to seeing hele in sentences.