In 1823, Kotzebue was commissioned to return to the North Pacific to resupply Kamchatka and then proceed to Alaska to protect the Russian American Company from smugglers. Eschscholtz accepted an offer to participate in this second voyage and left Kronstadt on 28 July 1823 aboard the "Predpriaetie" ("Enterprise"). Again Eschscholtz amassed significant collections of natural history specimens, especially insects. Substantial insect collections were made in Hawaii, Alaska, and California. After a voyage of three years, the expedition returned home in July 1826.