v.1. Ocean world/ Frozen seas-- v.2. Open ocean/The deep-- v.3. Seasonal seas/Coral seas-- v.4. Tidal seas/Coasts

v.1. Ocean world: Experience the power of the Blue Whale- the largest mammal to ever grace our planet. Learn how the sun and moon help control and tame the ocean. Travel far and wide- from the Eastern Pacific to ALaska, from the Bering Sea to the shores of southern California- and begin to understand the complexity and power of our oceans. Frozen seas: An environment where only the toughest survive, the arctic and antarctic are unrelenting habitats, Only in the spring does life begin again. Plankton blooms and feeds vast hordes of migrating fish, walruses rake the seabedfor calms, and minke and humpback whales gorge themselves on gigantic swarms of krill. v.2. Open ocean: In the immense space of the open ocean the sea bed is a staggering five miles below the surface and the nearest island is over 300 miles away. Yet here live many of the most spectacular ruthless and beautiful battles between hunter and prey. The deep: A place of mountain ranges, perpetual nigth, pressure extremes and cold... and the weirdest life forms on our planet. Dive to the depths of the ocean, an eerie world where predators with teeth so large they can't even close their mouths, chase bioluminiscent creatures of the deep. v.3. Seasonal seas: As the days grow longer, billions of microscopic plankton bloom under the blazing sun. Here in the temperate seas, three-ton basking sharks graze among forests of giant kelp- the fastest growing plant in the world. The firests harbor thousands of the other animals, including sea otters, brilliantly colored anemones, squid, and exquisite leafy dragons. Coral seas: Bathed in bright sunligth and warm, clear water, the coral reef in a rich oasis of life- the rainforest of the sea. Bizarrely adorned harlequin shrimp carry off a starfish several times their size, while haunting songs reverberate around the reef. heralding the arrival of humpback whales. Español

v.4. Tidal seas: The sun and moon move billions of tons of water with every turn of the tide. The strongest tides empty entire bays, smash trees on riverbanks, and strand sea creatures on suddenly dry land. Weaker tides control the movements of huge numbers of fish, coaxing schools of giant stingrays through astounding underwater arches. Coasts: From rocky cliffs to gentle dunes, the coasts are always changing. Day in an day out, they are battered by crashing waves. Seabirds come here by the thousands to nest, while baby turtles hatch and race to the sea, pursued by hungry predators. Español