69% of marine biologists are female yet males express a slightly higher interest in becoming one. Does this indicate gender bias?

More men than women are interested in becoming marine biologists at a ratio of 1.02 to 1.

69% of marine biologists are female and 31% are male.

Gender bias shows the difference between gender interest in being a marine biologist and the actual gender mix of people in the career.

If there is a significant difference, then it means there is a gender imbalance between those interested in becoming a marine biologist and those who end up becoming one.

In this case there are more men interested in becoming a marine biologist than those actually working as one. It is hard to pinpoint the exact reasons why, but there are likely various forces at play, from changing interests over time to societal norms and biases.