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Physeter macrocephalus, also known as the sperm whale, is the world’s largest species of toothed whale. It is a marine mammal found in all waters of the world, although they prefer the deep, warm waters of the tropical and subtropical oceans. Males can reach a length of up to 18 metres and a weight of up to 57 tonnes, while females are generally smaller.

The sperm whale is characterised by its enormously large head and distinctive barrel body shape. Its head accounts for up to one third of the total body length and contains the spermaceti organ, which is believed to be used for echolocation and communication. Spermaceti is a waxy, oily substance found in the male’s head that has been highly valued by humans throughout history for its luminous and lubricating properties.

These cetaceans are known to be extreme divers, and can dive to depths of more than 2,000 metres and remain underwater for up to 90 minutes. They feed mainly on giant squid and other cephalopods, but can also consume fish and sharks.

The sperm whale was heavily hunted commercially for many years, mainly for its spermaceti and oil, resulting in significant population declines. Although commercial hunting of the sperm whale has declined, the species continues to face significant threats, including ocean pollution, climate change and incidental capture in fishing nets. The species is considered “vulnerable” by the International Union for Conservation of Nature (IUCN).

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Grampus griseus, also known as the Risso’s dolphin, is a species of dolphin found in deep, temperate waters around the world. It is a member of the family Delphinidae and is one of the largest dolphins, measuring up to 4 metres in length and weighing up to 600 kg.

The Risso’s dolphin is dark grey on top and white or light grey underneath. It has a large, bulbous head with a distinctive dorsal crest extending from the back of the head to the base of the dorsal fin. The dolphin also has a long, narrow beak with sharp teeth.

These dolphins are highly social and are often found in groups that can range from a few individuals to more than 50. They are known for their acrobatic behaviour and are often seen leaping and spinning in the air.

Risso’s dolphins feed mainly on squid and deep-sea fish, and are very effective predators in the water. However, like many other cetacean species, it is threatened by bycatch, pollution and habitat disturbance.

Although hunted in the past for their meat and oil, this practice has greatly diminished today. However, the species is still considered “near threatened” by the International Union for Conservation of Nature (IUCN) due to a lack of population data and continuing threats to its habitat and survival.

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Balaenoptera edeni, also known as Bryde’s or Bryde’s whale, is a species of baleen whale found in tropical and subtropical waters around the world. It is one of the smallest whales of the genus Balaenoptera, with an average length of 12-14 metres and a weight of 13-23 tonnes.

The Bryde’s whale has a long, slender body with a small, narrow head. Their colouring varies from dark grey to grey-brown, and they have a series of throat folds that expand when feeding. They feed on a variety of prey, including krill, small crustaceans and fish.

These whales are solitary animals or are found in pairs, but are known to gather in feeding groups where there is a large amount of prey. They are often seen jumping and performing acrobatics out of the water.

Is an endangered species due to commercial hunting in the past, as well as bycatch in fishing nets and ocean pollution. The species is also vulnerable to declining prey availability due to overfishing. Conservation efforts, including bans on commercial hunting and the creation of marine protected areas, have helped stabilise fin whale populations in some areas.

Striped dolphin. More info…

Stenella frontalis is a species of dolphin found in tropical and subtropical waters of the western Atlantic. It is also known as Atlantic spotted dolphin or spotted dolphin.

Atlantic spotted dolphins are medium-sized dolphins that can reach a length of up to 2.5 metres and a weight of about 120 kg. They have a distinctive colouration, with a dark grey base and light and dark spots all over the body, especially in the flank region.

These dolphins are very social and are often seen in groups of up to several hundred individuals. They are very active and are known to perform impressive acrobatics, such as leaps and spins in the air.

Stenella frontalis feed mainly on fish and squid, and have been observed to associate with tuna and other large pelagic fish in the search for food.

Unfortunately, Atlantic spotted dolphins are endangered due to bycatch in tuna fisheries and pollution of the marine environment. Measures have been taken to protect these dolphins, including fishing regulations and the creation of marine protected areas.

Rough-toothed dolphin. More info…

Steno bredanensis is a species of dolphin commonly known as the rough-toothed dolphin or stenella dolphin. It is a medium-sized dolphin found in tropical and subtropical waters around the world, including the Atlantic Ocean, Indian Ocean and Pacific Ocean.

Rough-toothed dolphins have a distinctive appearance with a large, bulbous head and a slender body. Their body colour is generally dark grey on top and white or light grey underneath. The name “rough teeth” refers to the teeth at the front of their mouth, which are jagged and jagged.

These dolphins are known to be very active and agile in the water, and are capable of impressive acrobatics such as leaps and spins in the air. They are effective predators that feed mainly on fish and squid.

Unfortunately, like many other dolphin species, rough-toothed dolphins are endangered due to bycatch, pollution and habitat alteration. Although measures have been taken to protect these dolphins, such as the creation of marine protected areas, they still face significant threats and are considered an endangered species.

Atlantic spotted dolphin. More Info…

Stenella frontalis is a species of dolphin found in tropical and subtropical waters of the western Atlantic. It is also known as Atlantic spotted dolphin or spotted dolphin.

Atlantic spotted dolphins are medium-sized dolphins that can reach a length of up to 2.5 metres and a weight of about 120 kg. They have a distinctive colouration, with a dark grey base and light and dark spots all over the body, especially in the flank region.

These dolphins are very social and are often seen in groups of up to several hundred individuals. They are very active and are known to perform impressive acrobatics, such as leaps and spins in the air.

Stenella frontalis feed mainly on fish and squid, and have been observed to associate with tuna and other large pelagic fish in the search for food.

Unfortunately, Atlantic spotted dolphins are endangered due to bycatch in tuna fisheries and pollution of the marine environment. Measures have been taken to protect these dolphins, including fishing regulations and the creation of marine protected areas.