What is the biological content of the documentary "BBC Galapagos Islands"?

The BBC documentary "Galapagos Islands" was shot in ultra-high definition, capturing every wonderful shot of the Galapagos Islands. The Galapagos Islands have been called "a unique living museum and showcase of biological evolution." There are some unique biological species on the island: marine iguanas swimming like a dragon in the sea, short-eared owls stalking petrels, 500-pound giant tortoises roaring on the volcanic lava, and tidal albatross dancing in courtship.

BBC "Galapagos Islands"

The archipelago has a total area of ??7882 square kilometers, consisting of the largest island Isabela Island, which is 130 kilometers long, and four smaller islands. It consists of smaller islands and 14 small islands with a total area of ??more than 1 square kilometers. There are also many rocks and small reefs. The highest point of the archipelago is Wolf Volcano on Isabela Island, with an altitude of 1,707 meters.

The Galapagos Islands were formed by the eruption of a huge underwater volcano four to five million years ago, and surfaced more than one million years ago. Until now, volcanic eruptions on the islands still occur from time to time. The volcanoes on Isabela Island and Fernandi Island in the west of the archipelago have not stopped. The last two eruptions were in 1995 and 1998. The volcanoes here are not high, but they are very large. A volcano with an altitude of less than 1,000 meters can have a diameter of 20 kilometers.

The archipelago is in a very special location, at the intersection of warm and cold ocean currents, where the cold Peruvian current from the south and the warm equatorial current from the north meet. The marine life here is extremely rich, including both cold-loving and warm-loving animals. Apart from this, there is no place on earth where penguins and tropical reef fish can swim in the same water.

The Galapagos Islands have rare and amazing landforms and are a natural laboratory with various complex evolutionary environments. Darwin described it as a "self-world" that is fragile and violent. All make the Galapagos a unique place on earth.

BBC "Galapagos Islands" episode introduction:

Galapagos Islands EP01: Born of Fire.Born.of.Fire

It was born in fire! The Galapagos Islands consist of 13 main islands and more than 60 small islands, rocks and reefs, distributed over 400 kilometers of high seas. It is the confluence of four major ocean currents, and the island itself is the summit of a giant submarine volcano that is still moving slowly and steadily to this day.

Galapagos Islands EP02: Evolutionary Tracing Islands.that.Changed.the.World

Born in the flames of submarine volcanic eruptions, suffering the ruthless poison of the sun, It is a paradise for the most peculiar animals and plants on the earth. When humans first set foot here, they thought they were in hell, but this is not hell. This is a melting pot of life full of vitality. Finally, one person discovered the truth, that is Charlie Starwin.

Galapagos Islands EP03: Surviving Forces.of.Change

The Galapagos Islands are called "a unique living museum of biological evolution" and showroom”.

There are some unique biological species on the island: marine iguanas swimming in the sea like a dragon, short-eared owls stalking petrels, 500-pound giant tortoises roaring on volcanic lava, tide-dwelling albatrosses dancing and courting...