sharrison265's Identifications

The threeline mudsnail is found on sandy or muddy bottoms, intertidally to 300' from the Gulf of St. Lawrence to Florida. The shell is elongated and ovate with a high, conical spire and a convex body whorl. The aperture is ovate and notched at both ends with a strongly arched inner lip and thin outer lip. They can be whitish to tan in color, and grow up to 19mm.

Fun fact:
They are scavengers are often found on dead fish and other animals.

Source:
Marine Life of the North Atlantic by Andrew J Martinez 

The Blood Star is found on rocky bottoms, from the low tide line to around 7,920 ft. They range from the Arctic to Cape Hatteras. The sea star is colorful, with a radius of 4 inches. They have a small disc and five slender, cylindrical, pointed arms of equal length. There are two rows of tube feet and they range in color from red, orange, yellow, white, purple, and mottled.
Source:
Marine Life of the North Atlantic by Andrew J Martinez

Fun Fact:
Sea Stars have no heart, centralized brain, or eyes!
http://rosamondgiffordzoo.org/assets/uploads/animals/pdf/BloodStar.pdf

The Atlantic Jackknife is found on sand flats in low tide to shallow water from Labrador to Florida. The shell is white with a brown periostracum. The shell is approximately six times longer than it is wide! The animal is very sensitive to vibrations and can burrow in the sand quickly to evade predators.
Source:
Marine Life of the North Atlantic by Andrew J Martinez

http://www.edc.uri.edu/restoration/html/gallery/invert/razor.htm

Fun Fact:
This species' remarkable speed in digging can easily out compete a human digger, making the clam difficult to catch and not often consumed.
https://en.wikipedia.org/wiki/Atlantic_jackknife_clam

Echinarachnius parma, otherwise known as the common sand dollar is native to the northern hemisphere, specifically the north Pacific and northwest Atlantic, and all along the North American east coast. This sand dollar was found washed up onshore. The common sand dollar typically inhabits isolated sand beds below low tide level down to 1500 m in depth. It is distinguished by its round, flat, and disk-like shape typically 7.6 cm in diameter. Its shell is purplish brown in color and covered with maroon-colored moveable spines. A fun fact about this species is that it has been around since the Pilocene epoch.

References:
https://en.wikipedia.org/wiki/Echinarachnius_parma

This was found alive in East Boothbay near Bigelow Labs at 30 feet during a dive.

Northern Cerianthids resemble feather duster worms, but are actually anemones. they are generally white or light brown colored but can be darker reaching even purple colors. The tentacles were about two inches long outside of the tube, though are much larger under the sediment. They can be found from the Arctic down to Cape Cod, preferring colder waters.

The Cerianthids like this one are unique among anemones due to their lacking a pedal disk. Instead of attaching to racks, they make their own protective tube that hides their body burrowed under the sediment. They can retract into the tube when threatened much like feather duster worms.

Martinez: Marine Life of the North Atlantic

Common Names: Forbes' Sea Star
Location Found: spotted while diving at about 15 ft, attached to the sea floor and rock, alive
Habitat Types: intertidally on rocky, sandy, and gravel bottoms to 46 m
Physical Description: orange madreporite, tones of brown, orange, red, green and purple in color, usually has 5 arms but can have 4-7
Fun Fact: This sea stars will "stand" on the tips of their arms to release their eggs from the top to ensure they get carried away into the current!
Source: 'Marine Life of the North Atlantic' - Andrew J. Martinez

The American Lobster ranges from the mid-Atlantic all the way up to the Northeast coast of Canada. It is a decapod that reaches 8-24in in length. Its claws are asymmetrical with one usually being larger than the other. Its colors range from reds and oranges to yellows and blues and greens.

Fun Fact:
Female lobsters can store sperm for up to 15 months.

https://en.wikipedia.org/wiki/American_lobster

The Portly Spider Crab is found on various types of bottoms, especially mud, from low tide to 160 ft (some as deep as 400 ft!). They range from Nova Scotia to the Gulf of Mexico. Their carapace is oval with a row of nine spines down the midline of the upper side. It can have other smaller spines and hairs, and even some algae that is symbiotically growing on the crab! Their rostrum is triangular, with a small fork.
Source:
Marine Life of the North Atlantic by Andrew J Martinez

Fun Fact:
Spider Crabs have poor eyesight, but they have sensitive tasting and sensing organs on the end of each walking leg.
http://www.edc.uri.edu/restoration/html/gallery/invert/spider.htm

Ovalipes ocellatus, commonly known as the lady crab, is found along the eastern coast of North America on sandy/rocky bottoms from low tide down to 46 m in depth. This lady crab carapace was found washed up on shore. It is distinguished by its carapace being slightly wider than long, the five marginal teeth along the anterior of its carapace, and the yellow-grey color of its carapace with clusters of purple dots. Specifically, it is typically 8.9 cm wide and 7.5 cm long. A fun fact about this species is that it has a total of five larval stages.

References:
Martinez, Andrew. Marine Life of the North Atlantic: Canada to Cape May. New York: Aqua Quest Publications, Inc. 1994.

https://en.wikipedia.org/wiki/Ovalipes_ocellatus

This moon snail was seen in around 20 feet of water in a sandy area off of Canoe Beach in Nahant. This species are found on mud and sand, inter tidally from Gulf of St. Lawrence to North Carolina. The shell is thick and globular, the spire is low, the aperture is large and oval with a whitish interior. The operculum is brown, thin and horny. The umbilicus is open, showing the inside wall of the whorls almost to the apex. The foot is very large and gray. The tentacles are yellow and the color of the shell was gray to brown. A fun fact about the moon snail is that it forms a sand collar by embedding its eggs into the sand mass and uses its mucous to mold the egg ribbon around its shell. (Marine Life of the North Atlantic, Andrew J. Martinez)

The threeline mudsnail is found on sandy or muddy bottoms, intertidally to 300' from the Gulf of St. Lawrence to Florida. The shell is elongated and ovate with a high, conical spire and a convex body whorl. The aperture is ovate and notched at both ends with a strongly arched inner lip and thin outer lip. They can be whitish to tan in color, and grow up to 19mm.

Fun fact:
They are scavengers are often found on dead fish and other animals.

Source:
Marine Life of the North Atlantic by Andrew J Martinez