latin??

[grapeshotjoe]

I am working on the design for my back pice tattoo.

I need to do a english to latin translation. Can anyone help?????

This is what I want to say -( Son of the sea.)

This is what I have so far and I dont know if its corect.

Son=Filius

Of the=????

Sea=salum

I also need to translate ( Liberty or death) for under the tat.

Any help would be grate. Thanks.