From Pakistan Zehra et al (1995)conducted a study on molluscan epifauna on marine algae of Karachi. Ghani and Nawaz (2000) investigated algal associated fauna of Manora mangroves. Barkati and Rahman (2005) likewise studied Sandspit, Clifton and Port Qasim mangroves  for fauna including fauna of seaweed found there . .Baig et al (1997,2002,2006) worked on seasonal variation of Caulerpa and Sargassum-associated faunas

Hi Kazmi, Could you please give us full citations for the references mentioned by you?

and its highly diverse epifaunal communities. In: Meadows A. & Meadows P. eds. Coastal zone management and environmental impact assessment, Univ. Glasgow, UK. p. 24.

 Baig, H.S.and I. Zehra, 2006.Seasonal variation in sessile and mobile epifauna associated with brown seaweed (Sargassum spp.) from two rocky shores of Pakistan .Pakistan Journal of Oceanography, Volume 2(1), 1-8

Barkati, S. and S. Rahman, 2005. Species Composition and Faunal Diversity at Three Sites of Sindh Mangroves. Pakistan J. Zool., vol. 37(1): 17-31.

Ghani, N. and F .Nawaz, 2000.Fauna associated with the weeds of Manora mangroves.Proc.Natl ONR Symp. On Arabian Sea as a resource of biological Diversity: 65-89

Zehra, I., S.S. Shaukat and H.Saeed, 1995.Diversity of algal associated epifaunal communities from the Northern Arabian Sea. In: The Arabian Sea. Living marine resources and the environment. Ds M.F.Thompson and N.M.Tirmizi.Vanguards Books (PVT) LTD: 87-98

Kazmi,Q.B.,E.E.Valeem and S.Sadiq(in press).Crustacean Fauna of Pakistan associated with marine algae

Sir literature on associated fauna from seaweeds are enormous, even  i have done my dissertation on this topic  and i have found amphipods, isopods, molluscans, juvenile fishes etc.. 

Hi Kazmi and Karthick, Could you please send me the relevent reprints? I am searching for papers pertaining to interactions at biochemical and molecular level.

I would recommend the book by Chuck Amsler:

Amsler CD, Ed., Algal Chemical Ecology (Springer-Verlag, 2008). Paperback edition in 2009.

and other publications by Chuck.

Hi Vaibhav Mantri, they are many work carried out some of them i would recommended 

Variability of epifaunal assemblages associated with native

and invasive macroalgae

Ignacio GestosoA,B

, Celia OlabarriaA and Jesu´ s S. TroncosoA

Marine and Freshwater Research, 2010, 61, 724–731

Edgar, G. (1992). Patterns of colonization of mobile epifauna in a Western

Australian seagrass bed. Journal of Experimental Marine Biology and

Ecology 157, 225–246. doi:10.1016/0022-0981(92)90164-6

Duffy, J. E. (1990). Amphipods on seaweeds: partners or pests? Oecologia

83, 267–276. doi:10.1007/BF00317764

Duffy, J. E., and Hay, M. E. (1991). Food and shelter as determinant of food

choice by an herbivorous marine amphipod. Ecology 72, 1286–1298.

doi:10.2307/1941102

Rossi, F., Olabarria, C., Incera, M., and Garrido, J. (2010). The trophic

significance of the invasive Sargassum muticum in sandy beaches.

Journal of Sea Research 63, 52–61. doi:10.1016/J.SEARES.2009.

09.005

Schmidt, A. L., and Scheibling, R. E. (2006). A comparison of epifauna

and epiphytes on native kelps (Laminaria species) and invasive alga

(Codium fragile ssp. tomentosoides) in Nova Scotia, Canada. Botanica

Marina 49, 315–330. doi:10.1515/BOT.2006.039

More information was added to this question, I would like to add some more points to this 

1) In the intertidal region, algal members are associated with fauna of different types and  it is a natural phenomenon.

2) In our region ( Visakhapatnam,India ) we observed that  fauna such as Electra pilosa, Stegmoporella buskii, Stomopneustes are common forms to associated most of the marine algal forms

Hi Vaibhav,

some links I thought might be of use to the question you had posted. Both these papers focus on epifauna, one for sessile forms and other for mobile forms...

http://www.vims.edu/research/units/labgroups/marine_biodiversity/publications/_pdf/Parker_et_al_MEPS_2001.pdf

http://www.int-res.com/articles/meps/115/m115p271.pdf

Best regards

Deepak