Tuna

Richard Herrmann

Q1 2018

Tuna are warm-blooded and have “mega-gills.” There are many species of tuna and certain species have been listed as endangered. Because of the world’s increasing dependence on this protein source, they could become victims to overfishing.

Playing Tag with Sharks

Melissa Gaskill

Q1 2018

Shark tagging enables scientists to study the abundance and movements of sharks around the world. This also helps determine where sharks need the most protection. The tagging practices provide useful data to scientists.

A Different Kind of Dive Club

Caslyn Bennett

Q1 2018

The volunteer program at the Oregon Coast Aquarium exemplifies a culture of safety. Members of this dive program volunteered to take part in a DAN research study on irregular heartbeats.

DAN Member Profile: Ian Koblick

Amy Lee

Q1 2018

DAN member Ian Koblick is a science teacher, aquanaut, hotel manager, diver and much, much more. Read more about Koblick’s passion for diving.

Walruses

Sabrina Belloni

Q1 2018

Weighing up to 3,000 pounds, walruses are among the largest pinnipeds. However, walruses and polar bears are threatened because of diminishing sea ice in the Arctic. Learn more about these pinnipeds.

Know Your Oxygen-Delivery Masks

Q1 2018

Oxygen units include various delivery systems, including oronasal masks, nonrebreather masks and bag valve masks, so divers should know the appropriate mask to use in each situation.

Ocean Advocacy in America

Lora Snyder, Oceana Campaign Director

Q1 2018

Legislation was proposed that could lead to the degradation of marine environments through overfishing and limiting transparency. Read more about how divers can help save the oceans.

Journey’s End

Ned and Anna DeLoach

Q1 2018

In attempt to find larval fishes and invertebrates, two divers attempt to dive at dark. After several foiled attempts and an onslaught of minnows, they were able to find one cephalopod.

Isle Royale National Park

Becky Kagan Schott

Q1 2018

Isle Royale is in the northwest corner of Lake Superior, and belongs to the state of Michigan. It was declared a national park in 1940 and boasts many shipwrecks — ranging from a 19th-century paddle wheeler to modern freighters.