Shane Gross / Pelagic squid (species unknown) uses ink (yellow patch) to hide from potential prey. Inking is a common hunting practice in the open ocean. Anilao, Philippines.

SCOTLAND: The Big Picture / Sunset over Foula, Shetland, Scotland, UK, June.

Tim Fitzharris / Indian Blanket (Gaillardia pulchella) and Lupine (Lupinus sp) flowers, Inks Lake State Park, Texas

Tim Fitzharris / Indian Blanket (Gaillardia pulchella) flowers and Opuntia (Opuntia sp) cacti, Inks Lake State Park, Texas

Tim Fitzharris / Indian Blanket (Gaillardia pulchella) flowers and dead Juniper (Juniperus sp) tree, Inks Lake State Park, Texas

Tim Fitzharris / Willow (Salix sp) and Maple (Acer sp) trees along lake in autumn, Inks Lake, Inks Lake State Park, Texas

Tim Fitzharris / Indian Blanket (Gaillardia pulchella) flowers and Opuntia (Opuntia sp) cactus above river, Inks Lake State Park, Texas

Tim Fitzharris / Deciduous trees along Inks Lake, Inks Lake State Park, Texas

Tim Fitzharris / Creek, Inks Lake State Park, Texas

Tim Fitzharris / Indian Blanket (Gaillardia pulchella) flowers and Opuntia (Opuntia sp) cacti, Inks Lake State Park, Texas

Tim Fitzharris / Inks Lake, Inks Lake State Park, Texas

Tim Fitzharris / Indian Blanket (Gaillardia pulchella) flowers and dead Juniper (Juniperus sp) tree, Inks Lake State Park, Texas

Tim Fitzharris / Indian Blanket (Gaillardia pulchella) flowers and Opuntia (Opuntia sp) cacti, Inks Lake State Park, Texas

David Fleetham / Day octopus (Octopus cyanea) releasing an ink cloud in an attempt to escape a predator, Hawaii, Pacific Ocean,

Fred Bavendam / Pacific giant octopus (Enteroctopus dofleini) moving away releasing a cloud of ink, British Columbia, Canada, Pacific Ocean. Some backscatter digitally removed.