Water Buoyancy Simulation for Unity Engine

Unity 5.1 or later versions. Feel free to try older version

You can use the ready to go prefabs (WaterPro_DayTime and WaterPro_NightTime).
They are both located in the Prefabs folder. The only difference between the two is that they use different shaders for daylight and moonlight.

The two important scripts are WaterVolume.cs and FloatingObject.cs.
The water volume applies buoyancy forces only to floating objects. The water volume needs to have a tag Water Volume in order for the floating objects to detect collisions with the water. The floating is just like in real life physics. If an object has density lesser than the density of the water, it will float. If an object has greater density than that of the water, it will sink. If for example an object has density equal to half the density of the water, then the object will submerge exactly half of its volume. The other half of the volume will be above the water. For more info see this Buoyancy Reference

The WaterVolume.cs script works only with the procedural Mesh in the project due to performance optimizations.

The MIT License (MIT)

Copyright (c) 2015 Denis Rizov

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.