The ocean depths hold a captivating array of creatures, each with unique adaptations and survival strategies. Among them, the Basking Shark and the Great White Shark stand out as majestic yet contrasting figures.
The Basking Shark, a gentle giant and the second-largest fish in the sea relies on its filter-feeding prowess to thrive. In contrast, the Great White Shark, an apex predator, is renowned for its powerful jaws, sharp teeth, and hunting skills.
Let’s explore their distinct physical attributes, behaviors, and ecological roles as we delve into a hypothetical comparison of these two ocean titans.
Credit: Greg Skomal (left), Wikimedia Commons (right)
Basking Shark vs. Great White Shark: Main Differences
Both species are impressive in size and share a general streamlined, torpedo-shaped body design. However, their core differences lie in their feeding strategies, adaptations, and ecological roles. Here are some of the major differences between the Basking Shark and the Great White Shark:
Appearance: Basking sharks are grey/brown with mottled skin and an enormous mouth. The great white shark has countershading, a sleek head with jagged teeth.
Size: Basking sharks can reach 26 feet in length, compared to around 16 feet maximum for the great white shark.
Habitat: Basking sharks live everywhere, typically traveling thousands of kilometers to find plankton to feed, whereas great white sharks live on coastal waters, and prefer warmer waters.
Diet: Basking sharks are filter feeders, typically enjoying food such as tiny plankton, small fish, and invertebrates. The great white shark is the world’s largest predatory shark, feeding typically on other sharks, seals, and sea lions.
Life span: Basking sharks can live to around 50 years, whilst great white sharks can live to around 70 years.
We’ll explore these differences and interesting facts about each shark more below.
Who Would Win?
As the Basking Shark glides peacefully through the water, its filter-feeding lifestyle could face a formidable challenge in a hypothetical confrontation with the Great White Shark, a master of the hunt.
The Great White would likely have the upper hand due to its predatory adaptations and aggressive nature. Its larger size, muscular build, and powerful jaws provide a significant advantage in physical confrontations. Additionally, its arsenal of sharp, serrated teeth, designed for tearing flesh, would inflict severe injuries on the Basking Shark, which has tiny, non-threatening teeth due to its filter-feeding lifestyle.
Furthermore, the Great White’s bursts of speed and agility when hunting prey would allow it to outmaneuver the slower-moving Basking Shark. Finally, as an apex predatory species, the Great White possesses honed hunting instincts and aggressive behaviors, while the Basking Shark, as a filter feeder, lacks these predatory drives.
Basking Shark
The basking shark is the second biggest fish on the planet. The shark is the only living member of the Cetorhinidae family. They are solitary animals, spending most of their time alone unless congregating around a particularly large patch of zooplankton.
The shark’s name comes from its habit of swimming to the surface of the ocean and basking in the sun’s heat.
The shark is incredibly large, reaching lengths of twenty-six feet (still considerably smaller than the whale shark). Much larger than the great white shark, which grows to between 15-16 ft or 5.6-4.9 meters. It is usually grey-brown with mottled skin and notches all over its body. It also has a distinctive large mouth that sets it apart from other sharks.
One of its unique features is its large, arching dorsal fin, which often protrudes above the water when it’s feeding near the surface, making it easily identifiable. It also has long, filamentous gill slits that almost encircle its head, allowing efficient filter feeding. Its caudal (tail) fin is crescent-shaped and quite large, contributing to its slow but powerful swimming style.
Marine biologists have discovered basking sharks have strong muscular hearts that probably help generate high blood pressure and flow. The basking shark muscles are warmer than the water they swim in.
Habitat
The basking shark is found around the world in temperate waters. These sharks move thousands of kilometers during the various months of the year as they seek out the largest patches of plankton.
They’ve been seen around Massachusetts, the Amazon River, the Mediterranean Sea, and other varied areas of the Earth’s oceans.
Interestingly, during the colder months, they usually move down to deeper depths, around 3,000 feet or 900 meters. Basking sharks have few predators; their remains are sometimes scavenged by other sharks.
Diet
The sharks have around 100 teeth per row in their mouths but they are filter feeders. This means that it opens its mouth and strains food through a filtering structure. The basking shark feeds on zooplankton, small fish, and invertebrates in the water. It uses its gill rakers when it swims forward and opens its mouth.
The large gill slits allow the shark to trap many small organisms. The basking shark is only one of three sharks that feed in this manner.
Reproduction
Basking Sharks reproduce through a method known as ovoviviparity, where eggs develop and hatch within the mother’s body, resulting in live birth. The gestation period is believed to be quite long, possibly up to three years.
Litter sizes are small, with only a few pups born at a time. Due to their slow growth and late maturity, basking sharks are particularly vulnerable to population decline.
At birth, Basking Shark pups are relatively large, measuring around 5-6 feet in length. However, many aspects of their reproductive behaviors remain a mystery due to the challenges of studying these creatures in their natural habitats.
Threats
Basking Sharks face numerous threats, primarily from human activities. They are often targeted for their fins and liver oil and are also at risk from bycatch in fisheries. Their slow speed and habit of feeding near the surface make them particularly vulnerable to boat strikes.
The basking shark has unfortunately become an endangered species, according to the International Union for Conservation of Nature. The population in the Pacific Ocean is considered the most threatened.
Various conservation measures have been implemented to protect them. Efforts are also being made to reduce bycatch and protect their habitats. Despite these measures, their populations are slow to recover due to their long gestation period and low reproduction rate.
Great White Shark
The great white shark is one of the Earth’s oceans’ most famous creatures. Despite being seen as one of the animal kingdom’s apex predators, these sharks are far more nuanced and far from the predators that they have been made out to be.
The great white shark is one of the easiest sharks to recognize. Not exactly due to its distinguishing features but because of the number of films and television shows that the creature has been featured in. They are the world’s largest predatory fish, weighing in at 1,151–1,700 lb (522–771 kg). The females are usually larger, sometimes reaching 2,450 lb or 1,110kg. They are also between 15-16ft or 5.6-4.9 meters.
Some suggest that the great white shark is the scariest-looking shark in the Earth’s oceans today. The sharks have a conical snout and large fins and are usually very bulky-looking. Their tails are crescent-shaped, and their bellies are white. The latter is known as countershading.
Countershading is a coloration that many sea creatures sport. It allows them to blend in, from the bottom, with the bright sun coming through the ocean’s surface, and to blend in, from the top, with the dark water in the ocean’s depths.
Habitat
The great white shark lives in almost all coastal waters. They prefer temperatures between 54 and 75 degrees F and 12 and 24 degrees C. Meaning they can adapt to both temperate and tropical waters. The largest populations are around the Northeast United States and California, Japan, Oceania, Chile, and South Africa.
Despite being present in many waters, such as the Pacific Ocean and Atlantic Oceans, there have been cases of overfishing impacting the great white population. For example, off the coast of New England, the populations were nearly driven to extinction due to human intervention.
However, due to the rapid rise of seal populations in Cape Cod, on the same coast, the number of great whites has increased.
Diet
The great white shark is the world’s largest predatory shark. It feeds on everything from other sharks, seals, and sea lions to fish. They sometimes prey on sea turtles and even small whales. They are also not put off my heavily boned carcasses.
For example, the oceanic sunfish, one of the heaviest species of boned fish, has been known to be eaten. Despite public opinion, human beings are not a part of the shark’s diet.
When hunting, they reuse the prey, attempting to surprise it before it knows the shark is there. The initial bite is so strong that sometimes, the prey flies out of the water and into the air.
Reproduction
Great White Sharks reproduce through ovoviviparity, where eggs develop and hatch within the mother’s body, resulting in live birth. After an 11-12 month gestation period, females give birth to litters of 2-10 well-developed pups, each around 4-5 feet long.
Specific breeding grounds remain elusive, but coastal areas often serve as birth and nursery areas. Their long gestation and small litter size contribute to a slow reproductive rate, making them vulnerable to population declines.
Threats
Great White Sharks face numerous threats, primarily stemming from human activities. Targeted fishing for their fins, meat, and jaws or teeth poses a significant risk, as does sport fishing. Bycatch, the accidental capture in various fishing gear like longlines, gillnets, and trawls, also contributes to their decline.
The great white shark is currently listed as vulnerable by the IUCN Red List.
Habitat degradation, including coastal development, pollution, and climate change, further jeopardizes their survival by impacting prey availability and migratory patterns. Additionally, negative public perception fueled by misconceptions and sensationalized media portrayals can hinder conservation efforts.
Ocean Insights: Hear From Our Experts
By Hamna Faizan
Marine Life Researcher and Lecturer, with an MSc in Zoology
FAQs
How can you tell the difference between a great white shark and a basking shark?
The great white shark has a far more distinctive color scheme. The dark and light sections of their bodies are far more obvious than on a basking shark. The latter has a large mouth and a distinctive conical snout.
Is a basking shark bigger than great white?
Yes, the basking shark is the second-largest shark in the Earth’s oceans. It grows to around twenty-six feet, whereas the great white grows to about sixteen feet in length.
Do white sharks attack basking sharks?
Usually, basking sharks do not have to worry about predators. The most common occurrence of great whites eating basking sharks occurs after the latter is already dead. Great whites might scavenge the basking sharks’ remains.
Is a basking shark a predator or the prey?
The basking shark is a filter-feeding animal, collecting a wide variety of plankton and small fish, technically making it a predatory carnivore. However, other sharks, like the great white, are more traditional active apex predators.
