Haddock & Pollock

Haddock
Haddock
Pollock
Pollock

These two codfishes have similar-sounding names, looks, and habits. Both are much more likely to be found schooling in open water around the upper reaches of offshore wrecks and reefs than other bottom-hugging cod types.

Haddock Melanogrammus aeglefinus has a black shoulder spot and a high triangular dorsal fin, while Pollock Pollachius virens has more rounded fins and no spot. Pollock is the larger of the two, growing up to 70 lbs, although typically to 3 ft and 15 lbs, while Haddock is more typically 2 ft and 5-10 lbs. Both are good eating, although Haddock is considered the better of the two.

Schooling Pollock
Schooling Pollock

Sea Squirts

Molgula manhattensis ( right )
Styela Partita
( left )

Sea Squirts are found attached intertidally to subtidally. They show an extraordinary tolerance for brackish and polluted water, which makes them highly survivable in urban areas. Sea Squirts, usually about an inch in diameter, are capable of ejecting a stream of water when agitated, hence the name. Usually found in groups of several animals. See also: Horned Salp.

Tunicates are much more advanced in the evolutionary scheme of things than anemones, having, for example, a circulatory system. The larvae actually even have several features in common with vertebrates, including the precursor of a spinal cord, but these are lost in the sac-like sessile adults.