Keystone species are those that help maintain the balance and survival of an ecosystem; without them, the ecosystem would drastically change, or it would completely disappear. As the name implies, these species are the keystone the ecosystem is based on; they are particularly important because, if they disappear, no other species can replace them. Keystone species are usually predators, but they might also include fungi and plants.

Over thousands of years, wildlife—plants and animals—formed their own unique ecosystems without any influence of outside forces until the Galapagos Islands underwent many changes, especially since the arrival of humans to the Islands. With the increase of the population, the demand for food also increased, causing an increase in fishing, poaching, hunting, in addition to an increase in the use of wood. 

For more than 180 years, scientists have studied this rich ecosystem and its species. Among all the scientists, the Galapagos Islands were of great importance to Charles Darwin; it was the place that gave him the main idea of evolution by natural selection.

10 August, World Lion Day, is a celebration of the animal kingdom’s most beautiful and fearsome creature founded by Big Cat Rescue, the world’s largest accredited sanctuary dedicated to big cats. Though a fun and exciting occasion for all, its foundations are based in a very serious matter: lion numbers have dramatically declined to the point where the species needs to be placed on the endangered list.

If you are an adventurer and a nature lover, you have to add the Galapagos Islands to your bucket list. In addition to the lack of natural predators and friendly wildlife, these Islands are teeming with a diverse array of endemic plants and animals. This means that they are not found elsewhere in the world, thanks to the geographical isolation of the Islands from other places.

There are some living organisms that cannot breathe the same way that mammals do because they do not have lungs, such as fish. If fish have a respiratory system similar to that of mammals, a single breath underwater will fill its lungs with fluids, making them useless.

Tuna is highly nutritious and incredibly beneficial to your body and can boost your health. However, some people question whether it is safe to consume tuna, and how much tuna should be consumed.

Our ecosystems consist of armies of creatures; without their presence the whole ecosystem will collapse.

The biological clock is responsible for major changes in our behavior, mood, and body functions; every cell have something similar to a clock.

It has always been understood that life under ice takes the winter season off, but studies have found that life under the ice is very much active.

Sharks can hardly be outswam, which is no wonder given their more than 400-million-year evolutionary history in the ocean.

While big animals have big muscles, with smaller bodies, tiny creatures invest most of their muscle power in weightlifting.

Diseases have come and gone, but others originated in animals have stayed; our relationship with nature is something that we need to examine.

Humans are taking Earth for granted to face the biggest environmental challenge our species has ever encountered; that is global warming.