Miscellaneous Crustaceans

Cladocerans
Various Cladocerans ( not quite microscopic )
Daphnia

Look very closely, and you may see swarms of Daphnia ( right ) swimming jerkily through the water as they feed on microscopic algae. These tiny "water fleas", are an important link in the food chain, converting plant plankton into animal.

Daphnia

Tadpole shrimps ( left ) grow much larger than daphnia, up to 1 inch. They are capable of swimming but are usually found crawling on the bottom, on plants, or burrowing. Their eggs are highly resistant to drying, which makes Tadpole shrimps well-adapted to life in temporary pools.

Tadpole shrimps

Freshwater shrimps are similar to their saltwater cousins and are usually small ( 1-2" ) and transparent.


Bull Shark

Carcharhinus leucas

Size:
to 12 ft, perhaps larger

Habitat:
coastal waters, bays, rivers, into freshwater

Notes:
dangerous

Bull Shark

The Bull Shark can be recognized by a combination of characters including a stout body, short blunt snout, triangular serrated teeth in the upper jaw, and no fin markings as an adult. This species has a second dorsal fin about one-third the height of the first, a small eye, and no skin ridge between the two dorsal fins. It is gray above and pale below, sometimes with a pale stripe on the flank.