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1. Hector's dolphin is the smallest dolphin species. Mature adults have a total length of 1.2–1.6 m (3 ft 11 in – 5 ft 3 in) and weigh 40–60 kg (88–132 lb).The species is sexually dimorphic, with females being about 5–7% longer than males. The body shape is stocky, with no discernible beak. The most distinctive feature is the rounded dorsal fin, with a convex trailing edge and undercut rear margin. The overall coloration appearance is pale grey, but closer inspection reveals a complex and elegant combination of colours. The back and sides are predominantly light grey, while the dorsal fin, flippers, and flukes are black. The eyes are surrounded by a black mask, which extends forward to the tip of the rostrum and back to the base of the flipper. A subtly shaded, crescent-shaped black band crosses the head just behind the blowhole. The throat and belly are creamy white, separated by dark-grey bands meeting between the flippers. A white stripe extends from the belly onto each flank below the dorsal fin.
2.There is nearby 7000 Hector's dolphin live in New Zealand waters
3.dolphins breathe air, so when they get tangled up in a net, rope or fishing line it can be a race against time to reach the surface or to escape. In their desperation to escape and avoid suffocation, or in getting tangled in gear, some tear muscles, break teeth, and sheer off fins. The more they struggle, the more entangled they can become.
Some break free but swim for months with gear wrapped around their bodies, entrapping them and sometimes sawing into their flesh and bones until they die from infections or starvation. Those who escape can be left with painful injuries.
4.Plastic bags are difficult and expensive to recycle, and most end up on landfill sites where photodegradation takes about 300 years. These break down into small radioactive particles contaminating the soil and rivers and join the food chain when they are consumed unintentionally by animals.
5.You should never attempt to feed dolphins, pet dolphins, or interrupt their way of life if you happen to see them in the ocean or in some freshwater rivers. To avoid taking commercial cruise liners through endangered areas where you'll likely encounter dolphin populations and coral reefs.