Pacific sleeper shark, Somniosus pacificus.
Greenland shark, Somniosus microcephalus.
Little sleeper shark, Somniosus rostratus.
Any species of shark in the family Dalatiidae.
The Pacific sleeper shark, Somniosus pacificus (Bigelow and Schroeder, 1944), is a large deep-water shark reaching about 4.4 m in length for males and 4.3 m for females. It is thought that this species can reach up to 7 m.
Big Sleepers: Ferrets spend most of their time (14 to 18 hours a day) sleeping, but when awake they are very active, exploring their surroundings relentlessly. Ferrets are crepuscular, meaning they are most active during dawn and dusk.
SLEEPER SHARK
Somniosus microcephalus, also known as the Greenland shark, and the gurry shark, lives very deep in the North Atlantic Ocean. It lives at depths down to 1,800 feet (550 m) in very cold water (36-45°F=2-7°C).
Duckbill sleeper (Butis butis)
Sanderling (Calidris alba)
Mute swan (Cygnus olor)
Goldeneye (Bucephala clangula)
Red-breasted merganser (Mergus serrator)
American coot (Fulica americana)
Collared plover (Charadrius collaris) ...
Somniosidae
(Sleeper sharks)
Centroscymnus
Portuguese dogfish (C. coelolepis) Â- Shortnose velvet dogfish (C. cryptacanthus) Â- Roughskin dogfish (C. owstoni) ...
A Black-lined Sleeper Goby and Red-barred Sandperch
A Black-lined Sleeper Goby at the Osprey Reef
A Blackmargined Damsel from the Solomon Islands
A Black-spot Goatfish at South Solitary Island
A Blackspotted Gurnard Perch from Ocean Reef ...
orange spotted sleeper goby (Valenciennea puellaris)
orange tail butterfly (Chaetodon xanthurus)
orange-face butterfly (Chaetodon larvatus)
orange-finned clownfish (Amphiprion chrysopterus)
orange-spotted pipefish (Corythoichthys ocellatus) ...
Daubenton's bats are super sleepers, hibernating for six months of the year.
I am one of the people who are lucky enough to have a mockingbird outside of my window and be a light sleeper. I'm about to lose it on this bird. The houses here are so cheaply made that it sounds like I'm right next to it.
They do not hibernate as some winter sleepers do. True hibernators slow down all their vital processes: breathing almost ceases; heart beat slows to only a few per minute; body temperature drops to or below freezing, ...
Related Species Pacific Sleeper Shark (Somniosus pacificus) lacks spine in front of dorsal fins; first dorsal fin closer to insertion of pelvic fins; occurs in deep water from Bering Sea to Baja California.
an old English name for the dormouse is 'the sleeper'; it is the only British rodent which hibernates, and it does this from about mid-October until April or May.
In the Company of Manatees by Barbara Sleeper and Jeff Foott. Explore the fascinating world of the manatee and learn what you can do to keep this gentle giant from disappearing forever.
Order Squaliformes (74 marine species): bramble sharks, sleeper sharks, dogfish sharks
Order Squantiniformes (12 marine species): angel sharks
Order Pristiophoriformes (5 marine species): sawsharks ...
SQUALIFORMES
Includes sleeper sharks, dogfish sharks, bramble sharks
NO CURRENT ENTRIES
PRISTIOPHORIFORMES
saw sharks ...
By day, the great horned owl is a sound sleeper, but not so at night. That’s when this feathered predator wakes up to hunt.
The sleeper, or guavina, occasionally grows large enough to be used as food. The round goby, native to the Black, Caspian, and Azov seas, has become a common pest species in the Great Lakes.
SUBORDER GOBIOIDEI
Includes loach gobies, sleepers, gobies, sand darts, wormfishes
SUBORDER KURTOIDEI
nurseryfishes ...
The train does not have sleeper cars and I spent a fitful night in a reclining airplane seat. The train makes many stops, but everyone going all the way to Wellington is seated in the last car and the conductor does not waken people in this car.
'I lingered round them, under that benign sky; watched the moths fluttering among the heath and harebells, listened to the soft wind breathing through the grass, and wondered how any one could ever imagine unquiet slumbers for the sleepers in that ...
The Greenland shark is one of the few sharks found in polar waters year-round. Because of its lethargic nature, the Greenland shark is also known as the sleeper shark.
considerably, as also the winter and dry-time-sleepers. Embryonic hairy means, that some wild mammal-types arise almost or quite bare is, whales, sea-cows, rhinoceroses, elephants, river-horses, stag-boars, bare-lint, some Fledertierarten u. a.).
They have an uncanny ability to sense our murderous intentions, taking flight and disappearing milliseconds before a fatal swat. And in our bedrooms, the persistent, whiny hum of their buzzing wings can wake the soundest of sleepers.
They are remarkably heavy sleepers, and are readily captured by the inhabitants ascending the trees on which they roost, and noosing them before they awaken.
 See also: Shark, Whale, Sleeper shark, Coral, Tiger
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