Background Essay


In warm-blooded creatures, when the temperature drops, we feel a chill. This chill is our blood leaving their former stations in the body to keep important organs like the brain and the heart at the required temperature for our metabolism to run properly. The warmth comes from our blood, hence the name of the species, warm-blooded.

However, cold-blooded animals do not have warm blood. They must rely on their environment to supply them with body heat. For example, Marylou’s (above) body would react very differently if she had hypothermia than CT (right) if he had hypothermia because he is cold-blooded and she is warm-blooded.

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This graph shows that the colder the water is, the probability of death is higher and the survival time is lower.

Graph from: