Fig. 17-CO, p. 473

Fig. 17-1, p. 475

Fig. 17-2, p. 476

250 HistoryProjections Oil 200 Coal Natural Gas Renewables Nuclear Quadrillion Btu Year

Fig. 17-3a, p. 476

Salt

Fig. 17-3b, p. 476

Well Seafloor Seal Gas Reservoir rock containing oil and dissolved gas

Fig. 17-4a, p. 477

Fig. 17-4b, p. 477

Fig. 17-5, p. 478

Fig. 17-6, p. 479

Fig. 17-7, p. 479

Fig. 17-8, p. 481

Fig. 17-9, p. 482

Fig a, p. 483

Fig b, p. 483

Power modules “Pelamis” wave energy converter The Pelamis machine, 492 feet long with an 11.5-foot diameter, is composed of three power conversion modules connected by weighted tubes. How it works Heave Side view Power module Hydraulic ram The motion caused by a wave swell is resisted by hydraulic rams Heaving and swaying Sway Top view Hydraulic ram Power module Power conversion module SwayHeave Joints on the opposite side of the power module allow for a perpendicular sway motion Hydraulic rams Motor Gen- erator Collection chamber Hydraulic rams pump high-pressure fluid into chambers that feed the fluid to a motor. The motor drives a generator to create electricity. Converting the Motion

Fig , p. 484

Fig a, p. 485

Heat exchanger (ammonia evaporator) Warm, shallow seawater Pressurized ammonia vapor Pump Turbine generator Electric power Liquid ammonia Heat exchanger (ammonia condenser) Cold, deep seawater

Pressurized ammonia vapor Liquid ammonia Electric power Fig a, p. 485 Pump Turbine generator Heat exchanger (ammonia condenser) Stepped Art Heat exchanger (ammonia evaporator) Warm, shallow seawater Cold, deep seawater

Fig b, p. 485

Fig a, p. 486

Arctic Ocean Russia North America Asia Northwest Pacific North Pacific Ocean United States Europe Asia Northeast Atlantic Russia China North Atlantic Ocean Africa Japan Western Central Pacific Peru Indian Ocean Fishing area boundary Southeast Pacific Australia South Pacific Ocean South America South Atlantic Ocean Antarctica Top five harvesters, 2004 (Live catch of fishes, crustaceans, and mollusks, in millions of metric tons) Top fishing areas, 2004 (live catch, in millions of metric tons) China Peru United States Chile Indonesia Northwest Pacific Western Central Pacific Northeast Atlantic Southeast Pacific

Fig b, p. 486

China Million metric tons Year World excluding China b

Table 17-1, p. 486

Fig , p. 487

Fig , p. 487

Fig , p. 487

Fig a, p. 488

Mid-water trawl net a

Fig b, p. 488

Fig , p. 488

Average per capita catch (lb) Average per capita catch (kg) Year

Fig , p. 489

Fig a, p. 489 Tons of fish per km –9 6–7 4–5 3–4 0–2 1900

Fig b, p. 489 Tons of fish per km –9 6–7 4–5 3–4 0–2 1950

Fig c, p. 489 Tons of fish per km –9 6–7 4–5 3–4 0–2 1999

Fig , p. 490

Fig , p. 490

Fig , p. 491

Fig , p. 491

Fig , p. 491

Fig , p. 492

Fin whale Sperm whale 15 Thousands of whales caught Sei whale 10 Blue whale 5 Humpback whale Year

Fig , p. 493

Fig , p. 494

Fig , p. 495

Fig , p. 495

Fig , p. 496

Fig , p. 497

Fig , p. 497

Box 17-1a, p. 498

Box 17-1b, p. 499

Box 17-1c, p. 499

Box 17-1d, p. 499

Fig , p. 501

Fig , p. 502

Fig a, p. 502

Fig b, p. 502

Fig c, p. 502

Fig d, p. 502