Dein Suchergebnis zum Thema: danger

Tetronarce nobiliana This large ray has an oval pectoral disc, two lobed dorsal fins on its stout tail, and a large caudal (tail) fin, all dark gray-brown on top and light underneath. Kidney-shaped electric organs on either side of its head are barely visible in the pectoral fins, but can deliver
Danger to Humans A large adult Atlantic torpedo can deliver a painful and stunning

The human environmental footprint is not only deep, but old. Ancient traces of this footprint can be found in animal bones, shells, scales and antlers at archaeological sites. Together, these specimens tell the millennia-long story of how humans have hunted, domesticated and transported animals,
of hutia, several species of which are currently vulnerable to extinction or in danger

The saying “Birds of a feather flock together� is being given new meaning by a study published in the Philosophical Transactions of the Royal Society b. Flocking birds often travel in groups made up of a single species, in which individuals are nearly indistinguishable from one another, as noted by
For small to medium flocking birds, the biggest source of danger comes from above

Pyrrolizidine alkaloids are as bitter and toxic as they are hard to pronounce. They’re produced by several different types of plants and are among the leading causes of accidental death in cattle. Plants that contain these alkaloids have made it very clear they don’t want to be consumed, but that
If bella moths perceive themselves to be in danger, they exude a frothy sphere of

In a new study published in PNAS, researchers have extracted the first ancient DNA from Caribbean parrots, which they compared with genetic sequences from modern birds. Working with fossils and archaeological specimens, they showed that two species thought to be endemic to particular islands were on
They’re one of the only native parrots in the region not in imminent danger of

In a surprise twist, a major group of flowering plants is evolving twice as quickly in temperate zones as the tropics. The finding runs counter to a long-held hypothesis that tropical regions, home to the planet’s richest biological diversity, outpace their temperate counterparts in producing new sp
Life on Earth Unique dove species is the dodo of the Caribbean and in similar danger

Acanthurus chirurgus This pancake-shaped reef fish is blue-gray to brown colored with thin, dark bars down its sides. It is sometimes offered as a fresh catch locally, but can cause ciguatera poisoning in humans. Handle with care during an encounter because of the sharp spines hidden in the c
Danger to Humans An unwary human who tries to handle the doctorfish risks the chances

Myliobatis aquila Although it is considered harmless to humans, this ray should be handled carefully because of the sharp spine at the base of its very long tail. It has a diamond-shaped pectoral disc that is much wider than long, with trailing pointed fins, usually a dark coppery to blackish on
Danger to Humans This ray is considered harmless to humans, however care must be

Parmaturus xaniurus This small, soft-bodied shark lives in deep water along the Eastern Pacific so it has larger eyes for low light, and larger gills for lower oxygen levels. It is slender and gray-brown, with lobed fins set further back on its body, and it rarely grows longer than 21 inches long
Danger to Humans The filetail catshark is considered harmless to humans due to its

Haploblepharus edwardsii This long, slender catshark prefers deeper cold waters off of coastal South Africa where it lies sedentary on the seafloor and scavenges crustaceans, polychaetes and small fishes. It is a sandy brown, with dark-outlined reddish saddles and dark and white spots, providing
Danger to Humans The puffadder shyshark poses little threat to humans due to its