"Fish oil" pills arranged in the shape of a fish. https://s3.eu-central-2.wasabisys.com/mastodonworld/media_attachments/files/112/882/346/189/718/656/original/4e000b6e0673b61b.png
Many people think we need to kill fish to get omega−3 fatty acids (sometimes called "fish oil"), but fish simply accumulate them by eating marine algae, so it's possible to get omega−3 fatty acids directly from algae.