I think you mean to say density. If I'm right, it'll sink.
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If an object placed in water sinks - then it has a density greater than water.
It equals the mass of the object placed in it.
If inserted into the water as a solid "blob" then it will sink - unless it dissolves first. But, if because of the shape, the mass of water displaced by whole object is greater than the mass of the object, it will float - just as ships made of metal do.
it will float
The same as when it is in air, unless the object interacts with either water or air, or both (in different ways). Density is dependant on the object's mass and volume and has nothing to do with the medium in which it is sitting, unless that medium interacts with it in some way.