FOR AGES 3 YEARS TO 18 YEARS
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The sawback angelshark (Squatina aculeata) is an extremely interesting species to read about. This species of angelsharks have a limited range around the globe. They are mostly found in the eastern Atlantic Ocean and the Mediterranean Sea. This species was also found in the Balearic Islands. However, the sawback angelshark is no longer seen in this geographic range. They have instead shifted to the Mediterranean Sea range. They have a strict marine range and their diet is in compliance with this range. Sawback angelsharks show cannibalism habits as they can be seen consuming other small sharks. This might be because sharks are a common animal found in their marine range. The Atlantic and Mediterranean marine range also have bony marine fish which are consumed by this marine species. Other animals preyed by them include invertebrates dwelling at the bottom of the Atlantic Ocean or Mediterranean Sea.
However, the sawback angelshark is Critically Endangered as per the International Union for Conservation of Nature (IUCN) Red List. One of the reasons for a decline in their population may be due to the excessive fishing of this species by many fisheries. To reduce the risk of their extinction, measures are being taken to keep these sharks protected.
There are many more interesting facts about the sawback angelshark in this article. So what are you waiting for? Keep on reading to know more.
If you liked this article on the sawback angelshark, you can also take a look at other fun articles which contain facts on Oceanic whitetip shark and Port Jackson shark.
The sawback angelshark (Squatina aculeata) is a type of angelshark.
The sawback angelshark belongs to the class Chondrichthyes.
The exact population of sawback angelsharks residing in the world at present is not known. However, it is known that they have a very low population. Sadly, their population is decreasing by the day due to excessive fishing.
The sawback angelshark (Squatina aculeata) lives in the ocean. The primary residence of the sawback shark is the western part of the Mediterranean Sea and the eastern coasts of the Atlantic Ocean. Apart from these regions, they can also be found in the waters of Morocco, Guinea, Gabon, Senegal, Angola, and Nigeria.
The sawback angelshark dwells in continental shelves as well as on slopes with sedimentation. They can be seen as deep as 4560 ft (1390 m) at the bottom of the ocean. They are residents of the intertidal zone which means sawback angelsharks can be found in the region where the high tide meets the low tide. The intertidal zone is found near the beach.
The sawback angelshark (Squatina aculeata) is a solitary creature. It lives on its own except during the mating season.
The average lifespan of a sawback angelshark remains unknown.
Sawback angelsharks are ovoviviparous animals which means that they have a very special mode of reproduction. Ovoviviparity is common in sharks. In this mode of reproduction, a male sawback angelshark mates with a female sawback. Following this, the fertilized eggs stay within the female sawback angelshark's body. The embryo within the eggs develops over time while the eggs are still inside the female's body. The eggs remain in the body of the female until they are ready to hatch. However, unlike mammals, these animals do not have any placenta. Much like birds or other viviparous animals, the embryos are nourished by the yolk of the egg. However, a female sawback angelshark provides oxygen to the eggs for their respiration.
The International Union for Conservation of Nature (IUCN) Red List has listed the conservation status of sawback angelsharks as Critically Endangered. Their population is facing the risk of extinction because the number of sawback angelsharks is on a gradual slope of decline due to human activity.
The sawback angelshark species is a light brown or gray-colored animal. The back of this species is adorned with multiple dark brown spots coupled with small white spots as well. The bodies of these fish do not have any ocelli. Moreover, this species flaunts black or dark-colored spots at the base of its tail, fins, and on the head and back. This species of shark also has a linear row of thorns running from its head through its back. They have whisker-like barbels that are fringed. The nose of this species has an exterior flap. This shark species can be seen with needle teeth.
*Please note the main image and this image are of an Angel Shark that belongs to the same family as the Sawback Angelshark. If you have an image of a Sawback Angelshark please let us know at [email protected].
Sawback angelsharks (Squatina aculeata) are not cute to look at. In fact, they are rather ugly due to their huge flat-shaped head, big mouth, and whisker-like barbels.
The exact communication modes of sawback angelsharks (Squatina aculeata) are not known. This species of angelshark is a type of shark. Generally, sharks communicate through the medium of sound, smell, touch, as well as through chemical signals. A shark can communicate with another shark by a visual tactic where it arches its body or nods its head. The lateral line that is present in all sharks helps the sharks to perceive vibrations in the water. This acts as a vital mode of communication to measure the distance of objects and locate prey. These vibrations can also be used by sharks to spot a possible mate.
A mature sawback angelshark can measure around 4.2-6.7 ft (1.2-2 m) in length. It can measure around two to two and a half times more in length than a koi fish.
Although the exact speed at which a sawback angelshark (Squatina aculeata) can swim remains unknown, they are known to be swimmers of moderate speed. However, they can pick up a quick pace when they chase their prey.
The average weight of a sawback angelshark is not yet recorded.
There are no separate names for male and female angel sharks. They are simply known as a male angel shark and a female angel shark.
A baby sawback angelshark is known as a pup, just like other juvenile sharks.
The primary diet of this species of angel shark is fish. They also consume small sharks and crustaceans such as shrimps, prawns, and crabs. Other invertebrates that this Critically Endangered species consumes include mollusks.
This species of sharks are predatory in nature. Moreover, this species of angel sharks may pose a threat to humans if they are threatened or disturbed.
Since this species of sharks can be quite predatory and can also be harmful to humans, they are not likely to make good pets.
Sawback angelsharks (Squatina aculeata) spend most of their time lying idly at the bottom of the ocean.
Earlier the sawback angel shark was easily found in the range of Balearic Islands. However, this species of angel shark is no longer as frequently spotted in the Balearic Islands range anymore. Their habitat has shifted from the Balearic Islands to a broader range in the Mediterranean Sea.
The hunting technique of this species of shark is through an ambush. This means that they lay still while awaiting their prey to arrive. It is upon the arrival of the prey that this species attacks them stealthily.
Although angel sharks are generally dwellers of the Pacific Ocean, sawback angelsharks have a different habitat.
All angel sharks possess the ability to camouflage. This is because of the coloration of their bodies. Their gray and brown color helps them to blend in with the ocean floor, which is why sawback angelsharks are a bottom dwellers. The brown and white-colored spots on their backs, coupled with the dark blots on their head, back, fins, and tails help in the camouflaging process even more.
There are 22 species of angel sharks. The specialty of the many angel shark species is that they bear a striking resemblance to a ray fish, unlike other sharks.
The main fact that has led to the endangerment of angel sharks is overfishing in their habitat. The nets that are used to catch this species of shark in fisheries often lack regulations. This leads to excessive fishing of this species. Another cause that is one of the leading threats to the decline in this species is habitat loss. Due to global warming, climate change, and human practices, this species from the genus Squatina, is suffering from the degradation of its natural habitat. They face a future risk of extinction.
Here at Kidadl, we have carefully created lots of interesting family-friendly animal facts for everyone to discover! Learn more about some other fish including spinner shark, or basking shark.
You can even occupy yourself at home by drawing one on our sawback angelshark coloring pages.
https://en.wikipedia.org/wiki/Sawback_angelshar
https://www.fisheries.noaa.gov/species/sawback-angelshark#conservation-management
https://animaldiversity.org/accounts/Squatina_californica/#behavio
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At Kidadl we pride ourselves on offering families original ideas to make the most of time spent together at home or out and about, wherever you are in the world. We strive to recommend the very best things that are suggested by our community and are things we would do ourselves - our aim is to be the trusted friend to parents.
We try our very best, but cannot guarantee perfection. We will always aim to give you accurate information at the date of publication - however, information does change, so it’s important you do your own research, double-check and make the decision that is right for your family.
Kidadl provides inspiration to entertain and educate your children. We recognise that not all activities and ideas are appropriate and suitable for all children and families or in all circumstances. Our recommended activities are based on age but these are a guide. We recommend that these ideas are used as inspiration, that ideas are undertaken with appropriate adult supervision, and that each adult uses their own discretion and knowledge of their children to consider the safety and suitability.
Kidadl cannot accept liability for the execution of these ideas, and parental supervision is advised at all times, as safety is paramount. Anyone using the information provided by Kidadl does so at their own risk and we can not accept liability if things go wrong.
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