Step 1: Understand the principle of indemnity.
The principle of indemnity in insurance means that the insured should not receive more than the actual loss suffered.
Step 2: Review options.
- Life insurance is based on a fixed amount of coverage, not related to the principle of indemnity.
- Marine and fire insurance both use the principle of indemnity to compensate for actual loss.
Step 3: Conclude.
Therefore, the correct answer is Life insurance, as indemnity does not apply.
Final Answer:
\[
\boxed{\text{Life}}
\]