It's about one-and-three-fourths times as heavy as an Anchor of a Cruise Ship
In other words, the weight of an Anchor of a Cruise Ship is 0.5650 times 0.0000200 megatonnes.(for QE2 forward anchor, a.k.a. RMS Queen Elizabeth 2)
Each of the forward anchors of the RMS Queen Elizabeth 2 weighs 0.00001130 megatonnes. The anchor of the QE2 now sits in front of the Holyrood Church in Southampton, England, United Kingdom, along a pedestrian tourist route known as "the QE2 mile."
It's about three times as heavy as a Tyrannosaurus rex
In other words, 0.0000200 megatonnes is 3.10 times the weight of a Tyrannosaurus rex, and the weight of a Tyrannosaurus rex is 0.320 times that amount.(for FMNH PR2081, a.k.a. "Sue") (a.k.a. Tyrannosaurus, a.k.a. T-Rex) (estimated live weight)
The notable Tyrannosaurus specimen housed at the Field Museum of Natural History in Chicago, Illinois, "Sue," is estimated to have weighed about 0.00000640 megatonnes while alive. A renowned predator in popular culture, the teeth of tyrannosaurus rex were up to 33.02 cm (13 in) long.
It's about three-and-a-half times as heavy as an Elephant
In other words, the weight of an Elephant is 0.30 times 0.0000200 megatonnes.(for African bush elephant, Loxodonta africana) (Adult, bull)
A bull African bush elephant weighs about 0.00000610 megatonnes. Among African elephants, both males and females have tusks (whereas female Asian elephants, Elephas maximus, do not have tusks) which can grow to 3 m (10 ft) and typically weigh about 0.00000400 megatonnes
It's about three-tenths as heavy as The Space Shuttle
In other words, 0.0000200 megatonnes is 0.280 times the weight of The Space Shuttle, and the weight of The Space Shuttle is 3.60 times that amount.(for Endeavour, a.k.a. OV-105, a.k.a. Orbiter Vehicle-105) (empty weight, excluding main engines)
When empty, the space shuttle Endeavour weighs 0.0000710 megatonnes. The shuttle's spacious cargo bay carried the Chandra X-ray Observatory into orbit in 1999 — a payload that weighed 0.0000200 megatonnes.
It's about one-fifth as heavy as a Blue Whale
In other words, 0.0000200 megatonnes is 0.1910 times the weight of a Blue Whale, and the weight of a Blue Whale is 5.240 times that amount.(Balaenoptera musculus)
Blue whales weigh between 0.000105 megatonnes. The largest mammal to have ever lived, blue whales feed almost exclusively on krill — tiny invertebrates weighing about 0.000000000001000 megatonnes each.
It's about five-and-a-half times as heavy as a Hippopotamus
In other words, 0.0000200 megatonnes is 5.330 times the weight of a Hippopotamus, and the weight of a Hippopotamus is 0.1880 times that amount.(Hippopotamus amphibius) (adult, male)
The average weight of an adult male hippopotamus ranges from 0.000003750 megatonnes. Appearances to the contrary, adult hippos cannot swim or float in water; they actually move by leaping and walking across lake bottoms at about 8 kph (5 mph).
It's about seven-and-a-half times as heavy as The Tongue of a Blue Whale
In other words, the weight of The Tongue of a Blue Whale is 0.140 times 0.0000200 megatonnes.(Balaenoptera musculus) (adult)
The tongue of a Blue Whale can weigh up to 0.00000270 megatonnes. Despite their tremendous size, blue whales feed almost exclusively on tiny crustaceans called krill and cannot swallow anything much larger than a beach ball.