You can contact CMFRI centers along both the coasts,apart from Marine biological centre at Peringapettai, NIO centres, Marine biological research centre@ Thiruvananthapuram. You can also contact aquatic environment & biodiversity department of all the fisheries colleges located @ respective marine centers.
You can contact Center of Advanced Study in Marine Biology, Annamalai University, Tamilnadu, there is studying different aspects of Marine ecology study. especially in Plankton collection and culture methods.
I agreed with ramgopal . you can contact NFMC (national felicity for marine cyanobacteria) for cyanobacteria culure.they are maintaining more than 300 cultures of cyanobacteria.