The southern blue-ringed octopus, named for its vibrant rings, is a small but deadly cephalopod, growing up to 8 inches. Despite its potent venom, this creature is not aggressive, biting only when

The southern blue-ringed octopus, named for its vibrant rings, is a small but deadly cephalopod, growing up to 8 inches. Despite its potent venom, this creature is not aggressive, biting only when agitated. It prefers to hunt small prey like crabs and patrol its tide pools undisturbed.

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Maanit Goel, 17, from Washington State, learned about the critically endangered Southern Resident orcas. Only 75 remain in the Salish Sea, threatened by declining Chinook salmon, their primary

Maanit Goel, 17, from Washington State, learned about the critically endangered Southern Resident orcas. Only 75 remain in the Salish Sea, threatened by declining Chinook salmon, their primary food source, in the Snake River-Columbia River system.

In 2021, Goel founded the Washington Youth Ocean & River Conservation Alliance (WYORCA) to mobilize youth. WYORCA advocates removing four lower Snake River dams, impeding salmon migration and harming orcas. Goel argues renewable energy shouldn't sacrifice a keystone species. With 30 volunteers, WYORCA educated over 6,000 students, held 20+ congressional meetings, and coordinated events. The group earned Congressional recognition and an EPA award; Goel also spoke at the UN Biodiversity Conference (COP15).

The sailfish, one of the ocean's fastest fish, can reach speeds up to 68 mph. These speedsters use their long bill to swipe and stab, stunning prey. Scientists believe their large, namesake sail

The sailfish, one of the ocean's fastest fish, can reach speeds up to 68 mph. These speedsters use their long bill to swipe and stab, stunning prey. Scientists believe their large, namesake sail enhances bill accuracy, acting as a keel for stability or a fence to herd prey.

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Zebra sharks undergo a remarkable transformation. While juveniles display distinctive stripes, their pattern shifts to spots as they mature, resembling a leopard more than a

Zebra sharks undergo a remarkable transformation. While juveniles display distinctive stripes, their pattern shifts to spots as they mature, resembling a leopard more than a zebra.

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The narwhal's tusk, an elongated tooth, can reach nearly 10 feet. Learn more in our [Marine Life Encyclopedia](https://bit.ly/3YSsUW5).

Join our community of Wavemakers! Subscribe to our

The narwhal's tusk, an elongated tooth, can reach nearly 10 feet. Learn more in our [Marine Life Encyclopedia](https://bit.ly/3YSsUW5).

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Join Bob and Jennie in the debut episode of "Unlocking Nature’s Hidden Relationships," filmed at Skull Valley Lavender Farm. This video explores

Join Bob and Jennie in the debut episode of "Unlocking Nature’s Hidden Relationships," filmed at Skull Valley Lavender Farm. This video explores mutualism, focusing on the symbiotic bond between flowers, butterflies, and bees. Special thanks to Will Duncan for hosting.

The Natural History Institute, a 501(c)(3) nonprofit, produces this series. For more content, to donate, or to connect, visit the NHI Website and their social media channels: Facebook, Instagram, and TikTok (@naturalhistoryinstitute).

Blue whales are the largest animals to ever exist, reaching up to 110 feet long and weighing 330,000 pounds. Learn more about these magnificent creatures in our