Southern right whale

The southern right whale is a very big whale.

It has a dark body and a long mouth. White patches grow on its head.

These whales swim in the cold southern seas. They eat tiny sea life called krill. They swim with their mouths open to catch food.

Some whales use their tails to catch the wind. This is a fun way to play in the water. They are very curious about people.

The southern right whale is a very large whale.

It lives in the oceans of the Southern Hemisphere. These whales have dark skin and a long, arching mouth. They do not have a fin on their back. You can see white patches on their heads. These patches are called callosities. They are white because tiny sea creatures live on them.

These whales follow a set of steps each year. In the summer, they swim in cold waters near Antarctica. They eat tiny sea life called krill. They use baleen to catch food. Baleen are long plates inside their mouths. They swim with their mouths open to strain the water.

In the winter, they move to warmer waters. They go to places like Australia and South Africa to have babies. Mothers often pick the same spots every year.

Some whales like to play at the surface. One special way they play is called tail sailing. They use their tails to catch the wind. This helps them stay in one place for a long time.

The southern right whale is a huge animal living in the Southern Hemisphere. These whales live in oceans between 20 and 60 degrees south. You can recognize them by their broad backs. They do not have a dorsal fin on their backs. They also have long, arching mouths and white patches on their heads. These white patches are called callosities. They look white because tiny creatures called cyamids live on them.

These whales follow a special way of living each year. During the summer, they swim in cold waters near Antarctica. They spend this time eating tiny sea life like krill and zooplankton. To eat, they swim with their mouths partly open near the surface. They use baleen plates to strain food from the water. Baleen are long, thin plates inside the mouth. A whale can have up to 270 of these plates.

People have a long history with these whales. In the past, they were a main target for whalers. This is why they were called "right" whales to hunt. From the 18th to the 20th century, many were killed. This brought them close to extinction. International protection began in 1937. However, illegal whaling continued until the 1970s. Now, the population is growing by about 7% each year.

Scientists have worked hard to understand these whales. Carl Linnaeus first classified right whales in 1758. Later, John Edward Gray proposed the name Eubalaena in 1864. For a long time, experts debated how many species existed. In 2000, a study using DNA showed they are a distinct species. This study proved they have not interbred with northern whales for millions of years. The population was estimated at 13,611 whales in 2009.

Southern right whales are very active at the surface. They often interact with humans and other sea animals. They are known for a unique behavior called "tail sailing." This is when they use their flukes to catch the wind. It helps them stay in one spot for a long time. This looks like a form of play. They also like to breach, which means jumping out of the water.

The southern right whale, known scientifically as Eubalaena australis, is a massive baleen whale. It lives throughout the Southern Hemisphere in oceans between 20° and 60° south. These whales are vital members of the marine ecosystem. They are easily recognized by several physical traits. They have broad backs that lack a dorsal fin. Their mouths are long and arching. Most notably, they possess white patches on their heads called callosities.

To feed, the southern right whale uses a specialized mechanism called baleen filtration. These whales feed almost exclusively on zooplankton and krill. They swim just beneath the water's surface with their mouths partly open. As they swim, they continuously skim water into their mouths. They then strain the water through 200 to 270 baleen plates. These plates are narrow and can measure up to 2.7 meters long. The plates are covered in very thin hairs to help trap tiny prey.

The physical makeup of the southern right whale is quite remarkable. Their skin is dark grey or black, though some have white belly patches. The white callosities on their heads are actually colonies of cyamids, or whale lice. While their exact biological function is unclear, some suggest they protect against predators. Adult females can weigh up to 40 tonnes. Some records show individuals reaching 17 meters in length. Interestingly, their testicles may be the largest of any animal. Each one can weigh about 50 kilograms.

These whales follow a strict annual migration pattern. During summer, they stay in the cold Southern Ocean near Antarctica to feed. In winter, they travel north to warmer coastal waters. They visit places like Argentina, Australia, Brazil, South Africa, and New Zealand to breed and calve. Females show strong maternal fidelity to these calving grounds. They often return to the same spots every three years. In Australia, they prefer coastlines with high wave energy. The loud sound of breaking waves may help hide them from predators like killer whales.

Southern right whales are famous for their active surface behavior. They are often curious about human vessels. They frequently engage in breaching, which is jumping out of the water.

They also perform a unique behavior called "tail sailing." In this practice, they use their elevated flukes to catch the wind. This allows them to remain in one position for a long time. This behavior is most common off the coasts of South Africa and Argentina. It is believed to be a form of play.

The history of the species is marked by a struggle for survival. From the 18th to the 20th century, whalers targeted them heavily. They were considered the "right" whale to hunt because of their characteristics. This hunting decimated their numbers and brought them near extinction. International protection was established in 1937. However, illegal whaling by the Soviet Union continued until the 1970s. Since industrialized whaling stopped, the population has grown by about 7% each year. In 2009, the global population was estimated at 13,611.

Taxonomy, or the science of classifying living things, has changed for this species. In 1758, Carl Linnaeus classified all right whales as one species. Later, in 1864, John Edward Gray proposed the genus Eubalaena. For a long time, scientists debated how many species existed. In 2000, a genetic study by Rosenbaum et al. changed this understanding. DNA evidence showed that northern and southern populations have not interbred for 3 to 12 million years. This confirmed the southern right whale as a distinct species. This split likely happened when the Panama isthmus formed and changed ocean temperatures.

Despite their recovery, southern right whales still face modern challenges. They are now a major focus for the whale watching industry. However, they continue to encounter dangers in the ocean. Ship strikes and entanglement in fishing gear are serious threats. Pollution also impacts their environment. Scientists predict the population may still be less than 50% of its pre-whaling size by the year 2100. Protecting their habitats remains essential for their long-term survival.