China has 39 operational ocean theme parks, housing 491 cetaceans from 11 different species, and it's building 14 more parks.
After missing at the end of 2016, the oldest known orca, nicknamed "Granny", is now officially considered dead by the Center for Whale Research.
A critically endangered population of killer whales in the Pacific Northwest may be encountering more noise pollution than in the past. A recent study suggests large passing oil tankers emit sounds at frequencies killer whales use to communicate and echolocate. Ultimately, researchers say, this could impede their ability to find food they need to survive.