Perhaps I am biased. However, I think that this web site is a good place to start.
Coverage may be a bit varied depending upon which country you are asking about. There are a number of us here who have some ties to Canada, ranging from people who live in Canada, to people such as me who grew up in Canada, have half our family members in Canada, but who live in the US, ranging further to people who just went to school there or considered going to school there. My impression is that coverage for other countries is lighter, but is still possible.
For any major with “marine” in the name, IMHO you should at least consider Dalhousie University in Halifax. It for example has degrees in marine biology, ocean engineering, or marine and environmental law (this latter one might be a graduate program). I am pretty sure that there are other marine specialties there. There is quite a bit of ocean and marine related research at Dal. Here is one example:
We toured Dal a while back when one daughter was looking for undergraduate schools. We liked it quite a bit but she was looking for a smaller university. Dal is also good for just general engineering, or general biology, or environmental sciences or quite a few other majors.
Memorial University of Newfoundland is also worth considering. I have heard that they are relatively reasonably priced for international students but have not personally checked this out.
On the west coast UBC, Simon Fraser, and the U. of Victoria are worth considering. They will be closer since you are in California.
In the middle, my understanding is that the U. of Guelph has an unusual marine biology program in that it concentrates on Great Lakes biology.
For a smaller university with a good program in marine biology, Acadia University (in Nova Scotia) is worth considering. It is also very good for general biology and for environmental sciences. My vague recollection is that their environmental sciences program is separate from their environmental studies program (or at least was back when I looked) which to me makes sense since these seem to me to be different things. I am generally skeptical of most smaller schools for engineering.
I am assuming that by “100k” you mean a total of about $100,000 for a full four years of university. I do not know whether or not the Canadian schools will meet this budget. When looking at costs, keep the exchange rate in mind (which is very favorable for those of us living in the US but paying tuition in Canada). In general the most famous Canadian universities such as McGill and Waterloo are more expensive because people are willing to pay. Also, education is largely funded by the province in Canada and different provinces will have different policies regarding what they want to charge international students. Alberta and Newfoundland have some oil money which might make them a bit more generous, although I have not checked prices recently. The university system in Canada is generally very consistently high quality across many universities across the country. We did pay somewhat less than $100,000 in total for four years, but we benefited from dual citizenship plus a pretty good merit based scholarship. I am pretty sure that some universities in Canada will have some merit aid potentially available for international students, but I am not sure how much.
I might also note that our daughter did not have any problem finding a good job back here in the US after graduating from university in Canada. What she did on her first job in the US to me sounded quite a bit like the research that she got involved in while she was a student in Canada, but it was all in biotech which is not my personal area of expertise.