Dein Suchergebnis zum Thema: danger

Nearly 150 million years ago, many ancient crustaceans went extinct following a massive collapse of reefs across the planet, and new Florida Museum of Natural History research suggests modern species living in rapidly declining reef habitats may now be at risk. Available online and scheduled to a
current rate during this century, then a few thousand species of decapods are in real danger

Poroderma pantherinum This nocturnal catshark is found in the warmer coastal waters off of southern Africa, usually sleeping among the rocky reefs during the day and hunting crustaceans and small body fish at night. Order – Orectolobiformes Family – Scyliorhinidae Genus - Poroderma Species
(Compagno 1984) Danger to Humans Due to its small size and feeding habits, it is

Cetorhinus maximus This slow-moving migratory shark is the second largest fish, growing as long as 40 feet and weighing over 5 tons. It is often sighted swimming close to the surface, huge mouth open, filtering 2,000 tons of seawater per hour over its complicated gills to scoop up zooplankton. Ba
Basking sharks are passive and no danger to humans in general, but they are large

Fontitrygon margarita This smaller, oval-shaped stingray has a pointed snout, and a round, pearl-like tubercular thorn in the very top center of the stingray’s disc. Its tail is slightly longer than its body, thick at the base and whip-like at the end, with one long, serrated venomous spine about
Danger to Humans The daisy stingray is considered harmless to humans.

Paragaleus pectoralis This small shark has a slender body, long snout, and large oval eyes. The fins are somewhat small except for the elongated, pointed pectoral fins, and it has an asymmetric caudal (tail) fin. This specialized feeder preys mostly on cephalopods like squid and octopus, but will
Danger to Humans There have been no documented attacks on humans by the Atlantic

Narcine bancroftii Like the name suggests, this is one of the rays that can create an electric shock from 14 to 37 volts, from specialized organs that run along their bodies. These small rays have a circular pectoral disc, with a stout tail that as two small dorsal fins and a triangular caudal (t
Danger to Humans Lesser electric rays have been know to knock humans down with their

Mustelus norrisi This slender shark has oval eyes over a pointed snout, long pectoral fins, and an asymmetrical caudal (tail) fin with a pointed lower lobe that trails back. It is a gray on top, fading to dirty white underneath, ideal for blending into the sandy or muddy bottoms of shallow bays a
Photo © George Burgess Danger to Humans This small shark is considered harmless

Gymnura altavela These broad, flat diamond-shaped rays are much wider than they are long, with a short tail that has one or more serrated spine at the base. They are generally dark brown, sometimes with pale-rimmed dark spots or blotches. They have been reported at almost 13 feet wide, but averag
Danger to Humans The spiny butterfly ray is harmless to humans as it is not aggressive

Whether it is flowers sprouting in the spring, cicadas mating in the blistering heat of summer, or caterpillars hatching to feed on their favorite host plant – across the natural world, the timing of biological events is so important it spawned its own scientific discipline: phenology. Much of ph
Life on Earth Unique dove species is the dodo of the Caribbean and in similar danger

Florida Museum of Natural History researchers have discovered a 10-million-year-old Neotropical nursery area for the extinct megalodon shark in Panama, providing fossil evidence the fish used these types of areas to protect their young for millions of years. The article, which appeared in the journa
Life on Earth Unique dove species is the dodo of the Caribbean and in similar danger