But in the repeated curve of her thigh and calf he saw shapes like sea shells, with the luminescence and faint muscular rays of the great chambered nautilus.

ECONOMIST: Charis Wilson

Bertoni, as far as I know, is a kind of hippie who lives by the sea collecting shells and seaweed.

NEWYORKER: Meeting with Enrique Lihn

When you take into account the ease with which they inhabit the ocean, free dive to depths of 15m or more, hold their breath for minutes, hunt for turtles, shells and sea cucumbers, and navigate between distant islands, led only by instinct, both names are equally fitting.

BBC: The end of a wandering way of life?

Organisms that make shells or have skeletons that are exposed to seawater, such as clams, snails and sea butterflies, could see their shells dissolve in water that is too acidic.

CNN: Ice shelf collapse: What does it mean?

They did this through measurements of magnesium content in the shells of microscopic sea surface animals found in ocean sediment.

BBC: NEWS | Science/Nature | World 'warmest for 12,000 years'

The researchers looked at variations in oxygen levels in the shells of tiny sea creatures found in samples taken from the world's ocean beds.

BBC: Climate change 'to halt ice age'

The sea would not become so acidic that shells would actually dissolve, but the extra acidity would mean making them was harder work, which might upset the oceanic ecosystem quite badly.

ECONOMIST: Global warming

During warm interglacial periods, when there may have been no sea-ice at all, an abundance of marine organisms would have left behind fossilised shells.

ECONOMIST: The South Pole as location and metaphor

State Wildlife Officers are firing salvos of firecracker shells, rubber bullets, and underwater charges to drive off a herd of about a hundred sea lions.

NPR: Large Sea Lion Population Threatens Fishing