While not invincible, whales employ their massive size, speed, and intelligence to minimize threats. However, certain predators possess adaptations that allow them to kill and eat whales through persistence and specialized hunting techniques. Examining these dynamics provides insights into the interconnected...
Sperm whales have functional teeth only on the lower jaw. They may dive over a mile to find squid in the dark depths of the ocean. Due to the absence of light in the whales’ feeding grounds, scientists can only speculate how these creatures obtain food. They may lie motionless near the...
A. Sperm whales eat more food. B. Blue whales live much longer. C. Sperm whales prefer to hunt schools of fish. D. Blue whales usually swallow schools of fish. E. [推理判断题。根据第二段中“the toothless baleen whale(须鲸类)became huge.Modern blue whales get as big as 100 feet.”...
However, in recent years, male factor research has made great advances, such as sperm DNA fragmentation, sperm apoptosis, altered sperm DNA protonation and FISH in spermatozoa. There are also many known cases of couples with sperm-attributable failures in which the sperm values of all tests ...
A.A sperm whaleB.A killer whaleC.A fish(2)How heavy is a sperm whale? AA.35 tonsB.3600 kgC.3500 kg(3)How many teeth does a killer whale have? CA.fourteenB.twentyC.forty(4)What can a sperm whale do? BA.Dance on the water.B.Dive into the de...
Moby Dick was probably an albino sperm whale. Sperm whales were one of the most common species hunted by whalers during the 19th century, due to the... Learn more about this topic: Moby Dick by Herman Melville | Summary, Characters & Analysis ...
Sperm whales have been observed sleeping verticallyin the water, giving the appearance of "standing" under the sea. Whales, like dolphins, sleep by turning half of their brain off, which scientists believe is to avoid predators or keep their bodies swimming and breathing. ...
Squids feed on everything they can grab – from plankton to large fish and even their brethren. The gluttony of these cephalopods is phenomenal. For example, the Humboldt squid, reaching a length of more than 3.5 m and numerous along the western coast of South America, rises at night to ...
Sperm whales have been observed sleeping verticallyin the water, giving the appearance of "standing" under the sea. Whales, like dolphins, sleep by turning half of their brain off, which scientists believe is to avoid predators or keep their bodies swimming and breathing. ...
The sperm whale (Physeter macrocephalus) lives in every ocean and most of the seas in the world, with the males also traveling into the icy depths of the Arctic and Antarctic. This photo shows a group of sperm whales in the sleeping phase in a position called candle in Mauritius Island, ...