  This paper presents a comprehensive description of the relative effect of
optical underwater turbulence in combination with absorption and scattering.
Turbulence induced scattering is shown to cause and increase both spatial and
temporal spreading at the receiver plane. It is also demonstrated that the
relative impact of turbulence on a received signal is lower in a highly
scattering channel. Received intensity distributions are presented confirming
that fluctuations in received power from this method follow the commonly used
Log-Normal fading model. The impact of turbulence induced scattering on maximum
achievable data rate in the underwater channel is investigated.
