After 6 h of emersion the calcium ion levels in 15 °C had increased to levels similar to those measured in 25 °C.
In contrast the calcium ion levels in 5 °C air declined significantly. Calcium ion levels varied somewhat when the animals were transferred from 15 and 25 °C back to seawater, but remained higher than those of the 5 °C treatment animals, where pre-treatment calcium levels were only regained after 6 h recovery in seawater