spinner dolphin characteristics

Characteristics Of The Spinner Dolphin. Spinner dolphins are one of the species decimated by nylon seine net tuna fisheries in the Eastern Tropical Pacific (ETP). Dolphin "friends" may swim along, touching flippers and stroking each other. The Spinner Dolphin is also famous for riding bow waves which are created in the water when boats go by. Most spinner dolphins rest during the day and feed at night. In this area, rough-toothed dolphins are the second most frequently observed species of dolphin after spinner dolphins, Stenella longirostris (Gannier, 2000). Spinner Dolphin Behavior. The sound waves bounce off objects around it and are received back into the dolphin's lower jaw. Spinner dolphins are probably the most frequently encountered cetacean in nearshore waters of the Pacific Islands Region. Spinners grow to be between 6 to 7 feet in length and can weigh up to 170 pounds. Spinner dolphins are about 6.5 feet long with a … usually below 20 kHz and harmonics up to 100 kHz (Lammers et al. During echolocation, the dolphin emits high-frequency sound pulses from an organ (the melon) in its head. Their preferred prey are fish and squid, which they find using echolocation. That is where the name “Spinner” comes from. Spinner dolphins earned their name because of their ability to spin multiple times in one jump. The Spinner dolphin is generally a pelagic animal, distributed across the Atlantic, Indian and Pacific oceans. Spinner Dolphins in general all share common characteristics. Data were collected around the islands of Moorea and Raiatea, separated by 170 km of very deep water (> 2000 m, Fig. 1 – Spinner Dolphin whistle showing the fundamental frequency or whistle contour and two harmonics (H2 and H3). Spinner dolphins received their common name because they are often seen leaping and spinning out of the water. Spinner Dolphins have slender bodies and long, thin beaks (except for the Atlantic short-snouted spinner). These mammals are typically around two meters in length and are on average about 90kg. Based on morphological characteristics, three sub species of spinner dolphin, viz., S. longirostris centroamericana, S. l. orientalis, S. l. longirostris and S. l. roseiventris are reported to occur in the world oceans (Perrin, 1990; Perrin et al., 1999). 2003), and durations between 0.05 The Spinner dolphin can be found in both shallow waters and deep waters of … The dorsal fin of a spinner dolphin is dark and triangular shaped. BOTTLENOSE AND SPINNER DOLPHIN WHISTLES 387 Fig. The body size, shape, and colour patterns of the various forms of Spinner Dolphin differ according to geographical location. Compared to bottlenose dolphins, spinners are fairly small in stature. The morphometric characteristics of spinner dolphin vary greatly geographically. Physical Characteristics: Stenella longirostris, commonly known as Spinner dolphins, are marine mammals with elongated, slender bodies that are optimal for swimming and jumping. The 10 whistle parameters extracted are also shown. Spinner dolphins' pectoral flippers are used to steer them through the water, They also use them to stroke one another, increasing and affirming social bonds. The species name, longirostris, is Latin for “long beak,” referring to their slender shaped beak. They often live in larger pods with the numbers from 100 to 1,000 in them. It is famous for its acrobatic displays in which it spins along its longitudinal axis as it leaps through the air. As the name indicates, spinning is a big part of what their behaviors include. 1). Scientists believe they spin for several reasons, including communication, removing parasites, and simply for the fun of it. Spinner Dolphin Characteristics. The Spinner dolphin is a dolphin that is found in offshore tropical waters around the world. Spinner dolphins and the tuna fishery. Spinner dolphins frequently travel together with large tuna schools and so fishermen chase dolphin pods, … A bottlenose, on the other hand, has a longer, sickle-shaped dorsal fin. The dolphin usually favors tropical and subtropical areas, though it is also known to occur in warm temperate waters. Size & Weight. 818 Words 4 Pages. It and are received back into the dolphin 's lower jaw name because of their ability to multiple. ( ETP ) Atlantic, Indian and Pacific oceans, longirostris, is Latin for “long beak, referring... In both shallow waters and deep waters of … Characteristics of the various forms of spinner dolphin whistle the. Typically around two meters in length and are received back into the emits... The name indicates, spinning is a dolphin that is found in both shallow waters deep! 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