2) sycon

3) leucon

2-syconoids

3-leuconoids

-Class cal carea: Have spicules composed of calcium carbonate.

-Hexactinellida (glass sponges): Have spicules composed of silica.

Branching tube sponge
Aiolochroia crassa
(Hyatt, 1875)

Description:
Chiefly massive, frequently lobate to rarely ramose. Ramose outcrops up to 15 cm long, lobes up to 6 cm high. Total size up to 17 cm in diameter in massive specimens. Surface irregularly conulose, with large smooth areas showing fields of pores (A. crassa-close up). Interconnecting ridges between the conules may enclose polygonal depressions. Conules acute or low and blunt, 2-4 mm high, 2-7 mm apart, but quite irregularly distributed. Oscules 2-4 mm in diameter, on lobal outcrops (A. crassa-oscula). Typically, at various places large thick fibers stick out beyond the dermis. The consistency is rubbery, cheese-like and somewhat compressible.

Color:
Normally yellow with blue or green spots, but total bluish specimens can be found.

Habitat:
This species is known almost exclusively from reef localities.

Distribution:
Abundant Caribbean; common Bahamas and occasional South Florida.

-it is found in florida waters

- the fire sponge can encrust large surfaces with a layer about 1 cm thick and grow in vertical forms up to 30 cm in height

-

Calcarea (have Calcium Carbonbate skeletons) 
example: Clathrina 

Demospongiae(have silicate or Calcium-based fibers intermixed with soft tissues) 
examples: Xestospongia, Acarnus 

2-calcarea

3-hexactinellida

2- sycon

3- ascon

Brown vulcano carpet sponge
Anthosigmella varians
(Duchassaing & Michelotti, 1864)

Description:
This sponge grows in two distinct habits: 1) Massive-amorphous, irregularly lobate forms, with contorted, conical projections, which may or may not have apical oscules; 2) Incrusting forms, 2-3 mm thick, covering large areas, up to 1 square meter or more. The surface is smooth, velvety, especially on projections, otherwise commonly coarsely verrucose, with simple or compound bumps 2-10 mm in diameter and 1-2 mm high. The oscules of the massive form are provided with conical collars, or situated on top of chimneys. Their diameter is 0.5-2.5 cm. Those of incrusting forms are more regularly disturbed, with collars 2-5 mm high. The consistency is firm, somewhat rubbery.

Color:
The color of massive forms is tan to brown, paler around the base and oscules. Incrusting forms are frequently darker, greenish, or a mixture of brown and green.

Habitat:
Incrusting forms bore into solid substrates of deeper reefs by secreting minute amounts of acid. The massive forms inhabit shallow fringing and patch reefs, areas of coral rubble and grass flats.

Distribution:
Florida, Bahamas and Caribbean.

Syconoids: tube like body, thick walls, highly folded into a series of incurrent canals

leuconoid: the largesy once

increase in body size.

Convoluted barrel sponge
Aplysina lacunosa
(Pallas, 1766)

Description:
Single or clustered, thick-walled tapering tubes of up to 35 cm high, 10 cm in diameter, with an apical vent of up to 3.5 cm with an iris type diaphragm (A. lacunosa-close up). The tubes are tapering more strongly towards the base than Aplysina archeri ; often the base is barely 1 cm in diameter. Tube walls deeply intended by irregular meandering grooves or disc-shaped depressions of up to 10 mm deep and wide (A. lacunosa-pitted). Consistency tough and hardly compressible; although there seem to be a hard and a soft form.

Color:
Ridges dark green to yellowish-green, valleys and pits yellow-green to yellow. Interior walls have yellow excurrent pores.

Habitat:
This species is known from reef and lagoon localities and from sandy flats between the reefs. Often have sediment, algae and various organisms on the surface.

Distribution:
Bahamas, Jamaica and Caribbean.