The cyanobacterium Synechococcus elongatus has a circadian rhythm made of three proteins (KaiA, KaiB, KaiC). A 24-hour cycle can be reproduced in a test tube — just proteins and ATP. No brain, no nervous system. Time as chemistry.
CFF: 0.57 Hz. For a snail, the world is a slideshow. Less than one frame per second. Everything around is blurry and slow. Or: everything around is instant, because there are no gaps to notice.
Ingeborg Beling, 1929: bees remember when flowers release nectar. Not where — when. 850+ genes synchronize expression in anticipation of feeding time. Time-memory written in genes.
The “3-second memory” myth is a lie. Goldfish remember for 5 months. Trained to associate sound with feeding — they respond after six months. Trained to swim exactly 70 cm — they maintain the distance when the starting point changes.
Clayton & Dickinson, 1998, Nature. California scrub jays remember what, where, and when they hid food. They retrieve fresh worms if hidden recently. They switch to nuts if the worms have already spoiled. Episodic memory without language.
Rehn & Keeling, 2011: dogs distinguish between 30 minutes and 2 hours of their owner's absence (by greeting intensity). But they don't distinguish 2 hours from 4 hours. There is a threshold — beyond it, time merges into “a long time.”
Jason Bruck, 2013: the dolphin Bailey recognized the whistle of dolphin Allie after 20 years and 6 months of separation. A record for social memory among non-human animals. Duration of acquaintance doesn't matter — memory is lifelong.
Desert elephants of Namibia and Mali travel hundreds of kilometers to water sources along routes unused for years, synchronizing with rains. Traumatized elephants in South Africa showed diminished social cognition 20+ years later.
Mental time travel (Endel Tulving). The only species capable of traveling to the past and future mentally. Remembering the past and modeling the future use the same neural networks. Evolutionary advantage: memory exists not for storage, but for prediction.
CFF: 300 Hz. Five times faster than a human. Flies see the world in slow motion. Your hand swinging a flyswatter — for a fly, it is a slow, predictable arc. The cost: enormous energy expenditure on processing.