Source: Cetaceans of the Channel Islands National Marine Sanctuary by Leatherwood, Stephen; Stewart, Brent Scott; Folkens, Pieter A; Channel Islands National Marine Sanctuary (Agency : U.S.); United States. National Marine Fisheries Service, 1987, https://archive.org/details/cetaceansofchan00leat
Book page: https://archive.org/stream/cetaceansofchan00leat/#page/46/mode/1up

Bottlenose Dolphin (Tursiops truncatus)
The common bottlenose dolphin or the Atlantic bottlenose dolphin (Tursiops truncatus) is the most well-known species from the family Delphinidae. Tursiops truncatus is the largest species of the beaked dolphins.

Rough-toothed Dolphin (Steno bredanensis)
The rough-toothed dolphin (Steno bredanensis) is a species of dolphin that can be found in deep warm and tropical waters around the world. The genus name Steno, of which this species is the only member, comes from the Greek for 'narrow', referring to the animal's beak — which is a diagnostic characteristic of the species.

Pygmy Killer Whale (Feresa attenuata)
Body to almost 3 m long.
Body black to dusky gray on back (distinct cape), lighter on sides, with white belly patch which may extend onto sides in area of anus.
Head rounded; no beak; lips white; lower jaw and chin may be white.
Dorsal fin to 'Am tall, erectly falcate; located near midpoint of back.
Flippers rounded on tips.
Distribution tropical and subtropical.
The pygmy killer whale (Feresa attenuata) is a poorly known and rarely seen oceanic dolphin. It derives its common name from sharing some physical characteristics with the killer whale. It is the smallest species that has "whale" in its common name.