Tina Tennessen

Tina Tennessen has a background in radio journalism and loves hearing a good story. She is a science writer, web editor, and a former radio producer. Before joining the National Museum of Natural History team in early 2011, she held the position of Public Affairs Officer at the Smithsonian Environmental Research Center (SERC) in Edgewater, Md. While at SERC, Tina created and edited a news blog called Shorelines and publicized Smithsonian research and educational programs, generating press coverage and public attention for issues such as ocean acidification, hypoxia, invasive species, sea-level rise, shoreline development, and over-fishing. Tina grew up near five of Minnesota's 10,000 lakes and feels fortunate to be working among marine scientists who have dedicated their lives to understanding the underwater realm and the issues that affect it.

Efforts to Protect the Critically Endangered Monk Seal

Monk seals -- the only completely tropical species of seal in the world -- are in trouble. Centuries of human exploitation and habitat destruction have caused the remaining populations of Mediterranean monk seals ( Monachus...

The Endangered Hawaiian Monk Seal

Scientists from the U.S. and Greece are working from opposite sides of the ocean to save the Hawaiian (pictured here) and Mediterranean monk seals . The IUCN Red List of Threatened Species has declared both species to be...

Blacktip Sharks by Enric Sala

Enric Sala has spent much of his career looking for the ocean's "time machines" -- areas rich in biodiversity and largely unaffected by humans. In this recorded webcast , Sala, a National Geographic Ocean Fellow, takes the...

Bigeye Jacks and Diver Balicasag, Philippines

"I was photographing this beautiful school of jacks when a diver slowly approached from beneath. I shifted my position to capture the moment he entered the ball of fish. Seconds later, he was completely immersed in the...

Green Turtle, Armeñime, Tenerife, Canary Islands, Spain

“As an underwater nature photographer, I struggled for a new way to bring back visions of fish and fauna. Soon I discovered that taking water out of the picture, rendering it invisible while it is still evident that it...

Sperm Whale, Dominica

“For the past few years I have visited the island of Dominica to enjoy its beauty both above and below the surface. This photo was taken during a lucky encounter with a member of the ‘group of 7’ pod. A very young calf...

Inside the Wave, Makena Beach, Maui

“While the shore-break at Makena Beach is notoriously dangerous and powerful, it also makes for some amazing images. On this particular morning I convinced my brother, Forrest, to ride a couple of waves on his boogie board...

Yellow-mouth Moray Eel in the Red Sea (Eilat, Israel)

“ This moray eel was resting among some hard coral and was mesmerized by my dive lights, making it a very cooperative subject. The moray eel rhythmically opens and closes its mouth to move water through its gills and...

Sockeye Salmon, Adams River, British Columbia, Canada

“Every four years, sockeyes come inland from the Pacific to spawn. The year 2010 was the largest run in 100 years, reaching more than 30 million fish. On this day, I waited for the right sunlight, then quietly slipped into...

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