Best Sand Dollar

Dendraster excentricus, commonly called the eccentric sand dollar, is an irregular sea urchin native to sandy habitats along the Pacific coast of North America. Its common name refers to the off-center position of the petal-like pattern on the upper surface of its flattened test. Living individuals...

Echinarachnius parma, commonly known as the sand dollar, is a species of flat, burrowing sea urchin belonging to the order Clypeasteroida. It is widely distributed across the Northern Hemisphere, inhabiting the sandy or muddy bottoms of temperate and boreal ocean waters. This invertebrate exhibits t...

Scaphechinus mirabilis is a species of sand dollar, a flattened burrowing sea urchin in the class Echinoidea. It was described by Alexander Agassiz in 1864 and occurs in the northwestern Pacific, where it inhabits sandy or muddy seabeds in temperate coastal waters. Its disc-shaped test and short spi...

Mellita quinquiesperforata, commonly known as the five-hole sand dollar, is a flat irregular sea urchin belonging to the family Mellitidae. It is distinguished by the five characteristic, keyhole-like lunules that pierce its rigid skeleton, or test. This species is found along the sandy coastal wate...

Leodia sexiesperforata is a species of sand dollar, an echinoderm belonging to the order Clypeasteroida, commonly found in the Caribbean Sea and the Gulf of Mexico. This marine invertebrate is uniquely characterized by its rigid, flattened, and near-circular skeleton, known as a test. As its scienti...

Encope emarginata is a species of sea urchin belonging to the family Mellitidae, recognized by its distinctive notched edges and flattened, disk-like test.

Encope michelini is a species of sand dollar inhabiting the shallow waters of the Gulf of Mexico, easily identified by its distinct posterior notch.

Laganum laganum is a flattened Indo-Pacific sand dollar described by Leske in 1778 and is the type species of the clypeasteroid genus Laganum.

Mellita tenuis is a living keyhole sand dollar whose notably thin, flattened test is adapted to shallow, wave-worked sandy seabeds.

Mellita notabilis is a living keyhole sand dollar distinguished within Mellita by lunules, the slots that pass completely through its flattened test.

Rotula deciesdigitatus is a distinctive irregular sea urchin known for its star-shaped body and the unique, digitate (finger-like) structure of its ambulacral petals.

Clypeaster speciosus is a large sea biscuit sea urchin belonging to the Clypeasteridae family, recognized for its heavily calcified test.

Dendraster terminalis is a living sand dollar distinguished by a nearly central apical system and food grooves that do not reach its upper surface.

Mellita isometra is a species of sand dollar native to the western Atlantic Ocean, distinguished by the characteristic lunules in its flat test.

Mellita longifissa is a species of sand dollar in the family Mellitidae, notable for its extremely long posterior lunule and Eastern Pacific coastal range.

Peronella japonica is a flattened sand dollar described by Mortensen in 1948 and associated by its scientific name with Japanese marine waters.

Fellaster zelandiae is an irregular sea urchin of the family Echinoneidae that is endemic to the coastal marine waters surrounding the country of New Zealand.

Fibularia ovulum is a minute species of sea urchin in the Fibulariidae family, known for its small, bean-shaped test found in marine sand.

Encope grandis is a species of sand dollar in the family Mellitidae commonly found inhabiting the shallow marine environments along the Eastern Pacific coast.

Laganum depressum is a species of flat sand dollar found in the Indo-Pacific, belonging to the Laganidae family of irregular sea urchins.

Peronella lesueuri is a species of irregular sea urchin in the family Laganidae, named in honor of the prominent French naturalist Charles-Alexandre Lesueur.

Peronella orbicularis is a rounded species of sand dollar in the family Laganidae, adapted to burrowing into the sandy substrates of the Indo-Pacific region.

Encope aberrans is a species of sand dollar described by Louis Agassiz in 1841, notable for its aberrant shape compared to other Encope species.