I doubt it. Unless you have a large, steady supply of seaweed from the Galapagos Islands, feeding might be an issue
Okay the first thing is to remember that this animals need aquatic environment, thus get a bathtub filled with rum, must be from 1960 and above, and the animal should be just fine.
because they need to keep the fish population up and cause they do and they need whales and stuff I think!
OF course you do !
It would be ideal to call the local attraction sites and inquire about needing marine gps snorkels. They may have the equipment you need onsite for your snorkel.
You'll need to major in Marine Biology, unsure about number of years you need.
A degree in biology would suffice, but degrees are offered in marine biology which would allow for a better chance of a job in the field.
high school diploma at the least.
fe Cage should be as tall as the iguana is long(including tail), and its footprint should be at least the total lengtth of the animal by half its total length. S a 6ft(1.8 m) iguana could live in a 6x6x3 ft enclosure.
To become a marine engineer you would need to obtain a bachelors degree in marine engineering, ocean engineering, or mechanical engineering. Typically that takes around 4 years. The following link provides more insight on what it takes to become a marine engineer, http://www.degreefinders.com/education-articles/careers/how-to-become-a-marine-engineer.html
Iguanas are naturally extremely territorial. Housing Iguanas together, no matter what the sex can result in fighting, biting, and even death. Baby Iguanas will be okay in a cage until about a year old but after this each Iguana will need their very own space/enclosure. If your Iguana's free roam, they will need separate basking areas or even roams. If you are planning on keeping them in an enclosure, they will need VERY large homes to be healthy and happy. Think tall, 6' and double the length of your Iguana. My Iguana is only about 1.5 and she has already outgrown two enclosures. Best of luck!
Marine biology
If you wish to keep a starfish alive for any length of time you will need to set up a "Marine Aquarium" complete with properly prepared sea water , a protein skimmer, heater, filter, lights, ozoniser etc etc. The minimum sized tank you would need to keep a 3" starfish is around 10 gallons.