 Acartia tonsinopleae were exposed to either a 18°C or 28°C temperature for 24 hours. Despite experiencing a significant increase in temperature, there was no evidence of any long-lasting effects on their respiratory rates, body lengths, or development times. Tonsinopleae have the ability to quickly adapt to sudden changes in temperature and recover from them without any lasting consequences. This article was authored by Matthew Holmes-Hackard, Matthew Sasaki, and Hans G. Dan.