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The whale shark is a filter feeder – one of only three known filter-feeding shark species (along with the basking shark and the megamouth shark). It feeds on plankton including copepods , krill , fish eggs , Christmas Island red crab larvae [ 65 ] and small nektonic life, such as small squid or fish .
The Greenland shark had been estimated to live to about 200 years, but a study published in 2016 found that a 5.02 m (16.5 ft) specimen was between 272 and 512 years old. [75] [76] That makes the Greenland shark the longest-lived vertebrate. [77] The maximum lifespan of the freshwater pearl mussel (Margaritifera margaritifera) may be 210–250 ...
Larger tiger sharks inhabit the upper region of the tank where their dorsal fin is breaking the surface frequently. [4] Swimming patterns seen from sharks in captivity are that of blacktip, bull, and lemon sharks being active 24 hours and those of sandbars, nurse and sand tigers being active at certain times of the day/night. [5]
Rhincodontidae is a shark family which includes the whale shark, the sole extant member and the largest living fish. A single extinct genus, Palaeorhincodon , is known from the Paleocene as well. [ 1 ]
Observations indicate that in the years since the mega-shark's extinction, baleen whales' physical mass has increased significantly. They can now reach up to almost a hundred feet in length.
Researchers examining southern right whales found that the median life span for the species was 73.4 years, and that 10 percent of individuals survived past 131.8 years.
Greenland sharks have also been found with remains of moose, polar bear, horse, and reindeer (in one case an entire reindeer body) in their stomachs. [12] [25] [21] The Greenland shark is known to be a scavenger and is attracted by the smell of rotting meat in the water. The sharks have frequently been observed gathering around fishing boats. [12]
While sharks sit near the top of the food chain in the ocean, their extinction would still have an effect on our life. Without sharks, the ecosystem would be thrown off, triggering changes to the ...