News tagged with dolphins
Dolphins learn from each other to beg for food from humans
(Phys.org) -- Dolphins may learn harmful or undesirable behaviors, such as begging for food from humans, from each other, Murdoch University researchers have discovered.
May 28, 2012 |
4 / 5 (1) |
15
Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals
Amid growing concerns about the spread of harmful mercury in plants and animals, a new study by researchers from The Johns Hopkins University and The National Aquarium has compared levels of the chemical in ...
May 21, 2012 |
3.3 / 5 (4) |
0
New study finds dolphins produce sounds in a similar way to humans
(PhysOrg.com) -- It has long been thought that dolphins produce sounds by means of "whistles," but a new analysis of a data gathered in the late 1970s has revealed that instead, dolphins make sounds by means ...
Sep 09, 2011 |
5 / 5 (8) |
2
|
Worm seeks worm: Researchers find chemical cues driving aggregation in nematodes
(PhysOrg.com) -- Scientists have long seen evidence of social behavior among many species of animals, both on the earth and in the sea. Dolphins frolic together, lions live in packs, and hornets construct ...
Jan 12, 2012 |
not rated yet |
0
|
Calif. rescuers hope dolphin finds way back to sea
(AP) -- A wayward dolphin that has spent two days in a narrow wetlands channel along the southern California coast was on its way out to the ocean Saturday when it suddenly turned tail and swam back to shallow ...
Apr 29, 2012 |
not rated yet |
0
Elephants are quick learners, offer helping hand
Elephants quickly learn to lend each other a helping hand - ah, make that a helping trunk.
Mar 07, 2011 |
4.9 / 5 (10) |
4
Scientists say dolphins should be treated as non-human persons
(PhysOrg.com) -- Scientists studying dolphin behavior have suggested they could be the most intelligent creatures on Earth after humans, saying the size of their brains in relation to body size is larger than ...
Jan 06, 2010 |
4.6 / 5 (120) |
59
|
Navy study: Sonar, blasts might hurt more sea life
(AP) -- The U.S. Navy may hurt more dolphins and whales by using sonar and explosives in Hawaii and California under a more thorough analysis that reflects new research and covers naval activities in a wider ...
May 11, 2012 |
5 / 5 (1) |
1
Ingenious fishing method may be spreading through dolphins
(PhysOrg.com) -- Researchers from Murdoch University believe a recently documented method of fishing may be spreading throughout a population of dolphins.
Aug 24, 2011 |
4.9 / 5 (15) |
1
|
Rare Chinese white dolphin gets DNA bank
A Hong Kong conservation group said Saturday it has set up a DNA bank for the rare Chinese white dolphin, also known as the pink dolphin, in a bid to save the mammals facing a sharp population decline.
Jan 15, 2012 |
not rated yet |
1
Rare whale caught on film for first time
Australian researchers Thursday revealed they had filmed a pod of extremely rare Shepherd's beaked whales for the first time ever.
Feb 23, 2012 |
4.7 / 5 (39) |
2
Dolphin whistles are unfit for porpoise
Bottlenose dolphins have whistles which they use to exclusively greet other members of their species, marine biologists in Scotland reported on Wednesday.
Feb 29, 2012 |
not rated yet |
0
New dolphin species discovered in Australia
Researchers in Australia have discovered that dolphin colonies living around Melbourne are a species unlike any other in the world, they revealed on Thursday.
Sep 15, 2011 |
4.6 / 5 (5) |
7
Male dolphins build complex teams for social success
(PhysOrg.com) -- Male dolphins not only form a series of complex alliances based on their close relatives and friends but these alliances also form a shifting mosaic of overlapping geographic ranges within ...
Mar 28, 2012 |
5 / 5 (2) |
0
|
Researcher discovers male bottlenose dolphins using social network to secure a mate
(PhysOrg.com) -- Marine biologist Jo Wiszniewski has observed a fascinating approach to mating among the Port Stephens Indo-Pacific bottlenose dolphins.
Oct 25, 2011 |
5 / 5 (1) |
0
|
Dolphin
Dolphins are marine mammals that are closely related to whales and porpoises. There are almost forty species of dolphin in seventeen genera. They vary in size from 1.2 m (4 ft) and 40 kg (90 lb) (Maui's Dolphin), up to 9.5 m (30 ft) and 10 tonnes (9.8 LT; 11 ST) (the Orca or Killer Whale). They are found worldwide, mostly in the shallower seas of the continental shelves, and are carnivores, mostly eating fish and squid. The family Delphinidae is the largest in the Cetacea, and relatively recent: dolphins evolved about ten million years ago, during the Miocene. Dolphins are considered to be amongst the most intelligent of animals and their often friendly appearance and seemingly playful attitude have made them popular in human culture.
For more information about Dolphin, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
