A marine heat wave nicknamed 'The Blob' lasted three years and disrupted ecosystems and fisheries along North America's Pacific coast.
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- The southern bluefin tuna's IUCN conservation status improved from "critically endangered" to "endangered."
- Leatherback sea turtle populations are declining in the Pacific Ocean but recovering in the Atlantic Ocean.
- Campbell Island is a subantarctic island.
- The endangered nabarlek, Australia's second-smallest rock-wallaby, was detected in a region where it had not been seen for 50 years.
- The Mojave Desert Tortoise, now classified as Gopherus agassizii sensu stricto, was assessed as Critically Endangered after the former widespread species was split into three species: G. agassizii, G. morafkai, and G. evgoodei.
- The deep Atlantic contains some of the world's oldest and most spectacular cold-water coral reefs and deep-sea sponge grounds, which depend on ocean currents to deliver food and disperse offspring.