Squalus suckleyi, commonly known as the Pacific sleeper shark, is a species of dogfish shark belonging to the family Squalidae. This species inhabits a wide range of depths, making it a prominent resident of various marine ecosystems.
Description & Characteristics
Squalus suckleyi is a moderately sized shark, reaching a maximum length of 140.0 cm. Its slender, fusiform body is characterized by a long, pointed snout, a relatively small mouth, and two dorsal fins positioned close together. The first dorsal fin is larger than the second, and both fins have a prominent spine. The shark’s coloration varies from grey to brown, often with darker spots or blotches.
Habitat and Occurrence
Squalus suckleyi exhibits a wide depth range, occurring from 15.0 meters down to 1244.0 meters. This adaptability allows it to inhabit diverse marine environments, including the epipelagic, mesopelagic, and bathypelagic zones. This shark is commonly found along the continental slopes and in deep water canyons of the northeastern Pacific Ocean.
Taxonomy
Squalus suckleyi is classified within the Class: Elasmobranchii, Order: Squaliformes, and Family: Squalidae. This family, commonly known as the dogfish sharks, encompasses a diverse group of sharks characterized by their slender bodies, two dorsal fins with spines, and a lack of an anal fin.
Feeding
Squalus suckleyi is a carnivorous shark with a diet primarily consisting of smaller fishes, cephalopods, and crustaceans. Its feeding behavior is opportunistic, and it relies on its sharp teeth and powerful jaws to capture prey. This shark’s nocturnal habits and deep-water dwelling contribute to its scavenging nature, making it a significant predator in its marine environment.
Image References