With its night dives, endemic fish and lava formations, the Big Island is a perfect paradise for a scuba diving vacation.

The "Advanced Dive Behavior" tag can record whale behavior, biology and travel data every second for weeks at a time.

These marine reptiles are endangered and beloved by scuba divers.

The shore-based census of humpback whales in the Aloha State is conducted three times per year.

Officials suspect the sea turtles drowned in illegal fishing nets.

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The orca who inspired the anti-captivity documentary *Blackfish*, after killing an Orlando trainer, died Jan. 6, 2017.

Presenting the 2017 readers choice awards for best macro scuba diving in North America.

A unique group of whales native to the Gulf of Mexico is one step closer to Endangered Species Act protections.