Ad Vitam is Latin for 'To Life'.
In this future world, insects have replaced meat as the primary protein source. Meat is still available, but one makes a cultural adjustment to consume it.
The coastal city and beach with the unique skyscrapers which the protagonists live in does exist in real life. The city is Benidorm, in the Alicante province of Spain.
Although never addressed in the story, jellyfish are seen as living representations of rejuvenation. The Turritopsis doohmiiare or the immortal jellyfish is able to revert to its infant stage once it reaches old age and experience adulthood all over again. It is one of the few living organisms known to delay the death process and heal itself from injury or sickness through anti aging. Scientists in real life have been studying such anti aging and rejuvenation techniques in jellyfish to see if it can be applied to human society.