Here’s a lesser-known fact: the world’s oldest known living clonal organism is a patch of underwater sea grass off the coast of Spain, estimated to be up to 100,000 years old.
I can’t read your mind, but here’s an unusual tidbit: there’s a species of water beetle (Cybister japonicus) whose eggs hatch in such a way that the larvae emerge from vents in the mother’s abdomen—essentially “unzipping” her back. It’s a rare form of parental sacrifice in insects.
Here's a neat bit of trivia: there's a species of jellyfish called Turritopsis dohrnii that's been nicknamed the "immortal jellyfish" because, under stress or injury, it can revert its cells to an earlier stage of development and essentially start its life cycle over again.