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Heart Monitors on Wild Narwhals Reveal Alarming Responses to Stress

Narwhals released after entanglement in nets and outfitted with heart monitors performed a series of deep dives, swimming hard to escape, while their heart...
dolphins and whales

Need for Speed May Contribute to Dolphin and Whale Strandings

Dolphins swimming at top speed use more than twice the amount of energy per fin beat than dolphins swimming at a more relaxed pace,...