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Bladder, toothed and spiral wracks often have notably higher antioxidant contents than many other seaweeds.

Genetic analysis finds evidence suggesting that acoustic fat bodies in the heads of toothed whales were once the muscles and bone marrow of the jaw.

During opening weekend on March 16, the museum was a hive of freckles and gap toothed grins, with visitors ranging in age from newborn to well seasoned.

The paper, published in the journal Nature, is entitled: "The evolution of menopause in toothed whales."

They found females of five "menopausal" species - narwhals and beluga, short-finned pilot, false killer and killer whales - lived about four decades longer than other toothed whales.