Colleges in Kerala

Dear rahumath, These are some government colleges.
1. Government Medical collegeThiruvananthapuram
2. Government Medical collegeKottayam
3. Government Medical collegeKozhikod.

Yes. you can do marine biology even after completing MBBS as long as you have a BSc with minimum 55% in Marine Biology, zoology, botany, biochemistry, microbiology, biotechnology, fisheries, or aquaculture or fields related to it. And as far as admissions into related universities are concerned, you can give their separate entrance exams which are relatively easier to get into.

The fee structure at Nirmala college of Nursing, Calicut is 90,500 per year.

St. Teresa's college is an autonomous institution with a primary cutoff range of 98%. You can apply for admissions by visiting the official website of the college and registering as a new candidate with the required fees, you can also avail admissions under various quotas as well.

Calicut University
Calicut St. Joseph's College
Union Cristian College
MS asmabi College.

89% is required to take admission in this course

You can buy certain requirements need to be fulfilled.

To pursue seat in B.Sc. in Chemistry at Sacred Heart College, Tirupattur one should complete his/her intermediate with 50 to 80 percentage and BSc in chemistry is a three year course and fee structure is 4000-6000. And cut off is 60 to 90

An equivalent Examination with 12 years schooling from a recognized board or university (state /cbse/icse). The student should have passed qualifying examination with Science (Physics, Chemistry, Biology), English and with minimum of 50% aggregate marks in PCB group