I took this subject!! I definitely recommend it

It was a weird choice (I chose it over Experimental Marine Biology even though the latter was part of the zoology major), but I don't regret it. Not too hard, and the very small cohort (~24 people in our year) and live-in arrangements with other students make it super-fun. Going and collecting seaweed independently, and doing the (pretty chill) group research project were highlights (though my friend dropped my camera into a tray of seawater - not fun). Also, you get on a first-name basis with Rick Wetherbee (potentially - he decided to come for the 2014 cohort, but he's retired...). The exams were fair but definitely covered all the content. You also get ~2 weeks to study for the two exams after returning to Melbourne, but the one drawback (imo) is that there are no recordings (since your lecture theatre is in the marine consortium with a view over Swan Bay), so make sure you pay at least some attention to the lectures if you decide to do it.
Disclaimer: it's not a bludge, but if you put in the effort you'll get an H1. If you don't, you'll probably do very badly (I think I recall Heroen, our coordinator, saying that the distribution the year before ours was very bimodal, and the class average was extraordinarily low and required scaling, but our cohort was much stronger and the content had not changed to account for the difference in grades). However, it's not like some sort of next-level complex material and there isn't really too much content, so getting an H1 is absolutely doable. The biggest plus is that the questions were *clear* - you knew what you were supposed to be answering, unlike a subject like Animal Behaviour where you have no clue how to respond to an exam question.