Human senses are limited

Human senses are very limited.

• Our vision is limited to a small part of the electromagnetic spectrum. We don't "see" the higher end of the frequency scale (e.g. gamma radiation), nor do we sense ultra-low electromagnetic frequencies.
• We only hear a few sound frequencies. We don't hear ultrasound like bats, nor the low grumbling frequencies used by elephants to communicate.
• Our sense of taste and smell is particularly small, whilst over 99% of all living species rely on chemical senses to find their way through the environment. They are also capable of communicating with one another with special chemicals call pheromones.

And there are a number of senses which are entirely lacking in humans:

• Electric pulses, as used by some tropical fish to orient and communicate in murky water.
• The magnetic field of the earth, which is used by some birds for orientation.
• The polarisation of sunlight, as used by honeybees to navigate.

Humans (...as well as monkeys, apes and birds...) are among the rare life forms that are primarily audiovisual.  Only through science and technology we are able to transform the immense sensory spectrum of our biosphere into the the small world of our own natural senses.