It's the tip of the iceberg. ✬

The part of an iceberg under the water is much larger than that above the water. ✬

The Titanic hit an iceberg. ✬

It's just the tip of the iceberg. ✬

This is only the tip of the iceberg. ✬

Is this just the tip of the iceberg? ✬

That's only the tip of the iceberg. ✬

That's just the tip of the iceberg. ✬

The ship collided with an iceberg. ✬

The ship hit an iceberg. ✬