What would happen if earth stopped having tides?

Answer 1

It's kind of pointless to ask what would happen if something that literally cannot possibly happen happened.

Tides are a result of gravity. Gravity isn't going away, therefore tides are not going away.

Specifically, Earth's tides are primarily a result of the Moon's gravity and the Sun's gravity. Even supposing somehow that the Moon were to be destroyed, there would still be tides (about the size of neap tides) due to the Sun. If the Sun were to suddenly vanish as well, we'd have much bigger problems than worrying about tides.

Comment: Tides are caused by differences in gravitational force at different points. So, gravity doesn't need to go away, but differential gravity does.

Also, the ocean tides on Earth depend a lot on the effect of the Earth's rotation.

So, it's possible they could go away. The Earth's rotation is slowing down, but only very slowly.

If the Earth suddenly "magically" had no tides, one obvious effect would be on the creatures that live in and around coastal tidal waters.

Ships and ports would be affected too.

Also, electrical energy generation based on tidal changes would not work.

Answer 2

If Earth stopped having tides, it would disrupt many ecosystems along Coastlines that depend on tidal cycles for feeding and breeding. Tidal energy, which is used for power generation in some areas, would no longer be available. Additionally, marine and coastal geological processes that rely on tides, such as sediment transport and erosion, would be impacted.