UFO Sighting in Wellington, Wellington on 2017-07-23 19:30:00 - 4 to 5 light in a line formation coming up out of water then back in to water

I was on my deck looking out at the sea i had noticed a couple dim lights appearing out of the water i had no clue what they could of been at the time, they moved up and down a couple 100 meters from the water level then they submerged and they were gone